Gates Open Res Gates Open Research 2572-4754 F1000 Research Limited London, UK 10.12688/gatesopenres.13447.1 Research Article Articles Practical needs and considerations for refugees and other forcibly displaced persons with neurological disorders: Recommendations using a modified Delphi approach

[version 1; peer review: 2 approved]

 Rezaei Shawheen Conceptualization Investigation Methodology Project Administration Writing – Original Draft Preparation Writing – Review & Editing https://orcid.org/0000-0002-4394-7371 a 1 Sakadi Foksouna Data Curation Investigation Writing – Review & Editing https://orcid.org/0000-0001-8839-4152 2 Hiew Fu-Liong Data Curation Investigation Writing – Review & Editing https://orcid.org/0000-0002-4708-3734 3 Rodriguez-Leyva Ildefonso Data Curation Investigation Writing – Review & Editing https://orcid.org/0000-0002-3316-1471 4 5 Kruja Jera Data Curation Investigation Writing – Review & Editing https://orcid.org/0000-0002-6082-5595 6 7 Wasay Mohammad Data Curation Investigation Writing – Review & Editing https://orcid.org/0000-0003-3750-2613 8 Seidi Osheik AbuAsha Data Curation Investigation Writing – Review & Editing https://orcid.org/0000-0002-7125-613X 9 10 Abdel-Aziz Saad Data Curation Investigation Writing – Review & Editing 11 Nafissi Shahriar Data Curation Investigation Writing – Review & Editing 12 13 Mateen Farrah Conceptualization Investigation Methodology Supervision Writing – Original Draft Preparation Writing – Review & Editing https://orcid.org/0000-0002-4293-8115 b 1 14 Global Working Group for Refugees with Neurological Needs Neurology, Massachusetts General Hospital, Boston, Massachusetts, 02114, USA General Hospital of National Reference, N'Djamena, Chad Neurology, Kuala Lumpur Hospital, Kuala Lumpur, Malaysia Universidad Autonoma de San Luis Potosi, San Luis Potosi, Mexico Neurology, Hospital Central Dr. Ignacio Morones Prieto, San Luis Potosi, Mexico Neurology, University of Medicine, Tirana, Tirana, Albania Neurology, University Hospital Center Mother Teresa, Tirana, Albania Neurology, Aga Khan University Hospital, Karachi, Pakistan University of Khartoum, Khartoum, Sudan Neurology, Soba University Hospital, Khartoum, Sudan Médecins Sans Frontières, Amman, Jordan Neurology, Tehran University of Medical Sciences, Tehran, Iran Neurology, Shariati Hospital, Tehran, Iran Harvard Medical School, Boston, Massachusetts, 02115, USA shawheenrezaei@gmail.com fmateen@mgh.harvard.edu

All starred authors made equal contributions to this study

No competing interests were disclosed.

 14 12 2021 2021 5 178 6 12 2021 Copyright: © 2021 Rezaei S et al. 2021 This is an open access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Background: There are >70 million forcibly displaced people worldwide, including refugees, internally displaced persons, and asylum seekers. While the health needs of forcibly displaced people have been characterized in the literature, more still needs to be done globally to translate this knowledge into effective policies and actions, particularly in neurology.

Methods: In 2020, a global network of published experts on neurological disease and refugees was convened. Nine physician experts from nine countries (two low, one lower-middle income, five upper-middle, one high income) with experience treating displaced people originating from 18 countries participated in three survey and two discussion rounds in accordance with the Delphi method.

Results: A consensus list of priority interventions for treating neurological conditions in displaced people was created, agnostic to cost considerations, with the ten highest ranking tests or treatments ranked as: computerized tomography scans, magnetic resonance imaging scans, levetiracetam, acetylsalicylic acid, carbamazepine, paracetamol, sodium valproate, basic blood tests, steroids and anti-tuberculous medication. The most important contextual considerations (100% consensus) were all economic and political, including the economic status of the displaced person’s country of origin, the host country, and the stage in the asylum-seeking process. The annual cost to purchase the ten priority neurological interventions for the entire displaced population was estimated to be 220 million USD for medications and 4.2 billion USD for imaging and tests.

Conclusions: A need for neuroimaging and anti-seizure medications for forcibly displaced people was emphasized. These recommendations could guide future research and investment in neurological care for forcibly displaced people.

 Neurology; Refugee; Asylum; Armed Conflict; Epilepsy: Diagnosis; Practice; Stroke; Headache The author(s) declared that no grants were involved in supporting this work. Background

There are more than 70 million forcibly displaced people worldwide according to the United Nations High Commissioner for Refugees (UNHCR), a number that is unprecedented in the history of the organization 1 . This figure includes 41.3 million internally displaced people (individuals fleeing their homes due to persecution, war or violence, but who still remain within their country’s border), 25.9 million refugees (individuals fleeing their country of origin due to persecution, war or violence, who have been granted refugee status under international law) and 3.5 million asylum seekers (individuals fleeing their country of origin due to persecution, war or violence, whose request for sanctuary has yet to be processed) 1, 2 . Displaced people, due to the experiences of violence, famine, armed conflict and/or persecution associated with displacement, often face a set of challenges that are distinct from those of other patient populations 3 . While the unique health needs of forcibly displaced people have been characterized in the literature, more still needs to be done on an international level to translate this knowledge into effective policies and actions, particularly in neurology 4 .

Although people are fleeing their homes in the largest numbers since World War II, there is a documented lack of international collaboration to address the health needs of forcibly displaced populations 3 . The neurologist community is poised to address this need through collaborative approaches. Especially in neurology, the treatment needs of forcibly displaced people are not well synthesized across locations and disorders. The published accounts available highlight the need for improved frameworks for understanding and treating the neurological conditions that come with displacement in more modern settings 5– 7 . The determinants of neurological health are also being better recognized, noting that environmental conditions can further compound the lived experiences of refugees with neurological disorders. These other factors include - but are not limited to - malnutrition, climatic extremes, exposures to infections and toxins, lack of protections and security, poor sanitation, and generally unstable living conditions 6– 9 . The neurological needs of displaced people often overlap mental health conditions resulting from the trauma and stress of displacement, including post-traumatic stress, anxiety and depressive disorders, calling for more in-depth investigations of the needs of this population in light of their specific context 10– 12 . Furthermore, systemic hurdles ranging from the lack of contextualized medical education for refugees with neurological needs to the limited resources available in many countries of first asylum make quality healthcare less accessible to displaced people 13– 15 .

By directly confronting this situation, the neurologists and related providers of neurological care have an opportunity to address the neurological toll of complex humanitarian emergencies 16 . The development of a more complete vision for pragmatic actionable steps for neurological interventions will streamline healthcare systems and international actors approach to alleviating this high burden of disease. Although current care is reactive and responsive to needs as they arise, at best, future planning could lead to preparedness and avoidance of humanitarian crises compounding the burden of global neurological disease.

Our modified Delphi consensus method attempts to address the critical need to devise a baseline set of guidelines on implementing concrete neurological interventions for displaced people in complex humanitarian emergencies 17 .

 Methods The Delphi method

The Delphi method has been demonstrated to serve as an effective process for arriving at a consensus among a panel of experts in multiple disciplines 18– 20 . Through an iterative process, experts are requested to complete surveys individually and then participate in group discussions to provide feedback on the results of the survey, which has been shown to enable a group to reach a consensus swiftly 18 .

An outline of the rounds of the modified Delphi method executed for this study is provided in Figure 1.

Delphi method flowchart. Study objective and protocols

The project included two full rounds of surveying and discussion in accordance with the Delphi method, with a final round survey that determined the working group-endorsed lists of contextual considerations ( Table 1) and concrete neurological needs of displaced people globally ( Table 2). The study was deemed exempt from formal review by the Mass General Brigham Institutional Review Board.

Ranking of other important considerations when treating neurological needs of displaced people.
Ranking Consideration Consensus (%)
1 Economic status of displaced person’s host country 100 *
2 Stage of displaced person in the asylum process 100 *
3 Economic status of displaced person’s country of origin 100 *
4 Availability of neurological care 63
5 Social support for displaced people 63
6 Language translation challenges 50
7 Rehabilitation facilities 50
8 Care of women and children 38
9 Healthcare coverage in national system for displaced persons 38
10 Education on how to care for displaced people 25
11 Increased training of neurologists 25
12 Mobile care teams/telemedicine 25
13 Placement upon discharge from hospital 25
14 Support of scientific study projects on neurological pathologies 25
15 Cultural differences 13
16 Logistics between hospital and asylum center 13
17 Professional support for physicians on the field 13
18 Religious issues 13
19 Ambulances 0
20 Food quality 0
21 Sports and recreational facilities 0
22 Trauma and injury prevention 0

*Consensus reached through round 1 discussion

 Complete ranked list of neurological interventions for displaced people.
Ranking Intervention Rating 1
1 CT scan 90.9
2 MRI scan 89.8
3 Levetiracetam 89.1
4 Acetylsalicylic acid 86.6
5 Carbamazepine 86.3
6 Paracetamol 81.8
7 Sodium valproate 81.7
8 Basic blood tests 80.7
9 Steroids 79.4
10 Combined anti-tuberculous medications 78.0
11 Clopidogrel 76.8
12 Lamotrigine 76.7
13 Electroencephalogram 76.6
14 Blood pressure screening equipment 74.4
15 Escitalopram 73.4
16 Propranolol 73.3
17 Amitriptyline 73.2
18 Folate 73.0
19 Vitamin B12 72.4
20 Vitamin B complex 72.1
21 NSAID 71.8
22 Phenytoin 71.1
23 Statin 70.9
24 Fluoxetine 70.6
25 Vitamin B1 68.8
26 Vitamin B6 68.6
27 Pregabalin 68.0
28 Gabapentin 67.9
29 Electromyogram-Nerve conduction study 67.8
30 Parenteral Acyclovir 66.7
31 Levodopa-Carbidopa 65.1
32 Lumbar puncture sets 63.9
33 Vitamin D 63.2
34 Warfarin 62.4
35 Intavenous Immunoglobulins 60.1
36 Hydrochlorothiazide 59.0
37 Opiate 52.6
38 Amantadine 48.4
39 Magnesium 45.3
40 Methylmalonic acid 37.3
41 Homocysteine 34.6
Member selection

In early February 2020, a list of 30 experts, primarily neurologists but also including non-neurologist physicians, was formed through an internet search through medical journal databases and professional websites. Expertise was determined by the individual’s knowledge of the unique neurological needs of forcibly displaced people as demonstrated by research publications and self-reported clinical exposure to displaced populations and was not limited to neurologists. The population considered forcibly displaced for this study included people displaced due to persecution or conflict and excluded people displaced due to economic or climate reasons. This list was further narrowed to 16 experts based on their geographic location, which were invited to join the study. A Global Working Group of nine experts representing the Republic of Albania, the Republic of Chad, the Islamic Republic of Iran, the Hashemite Kingdom of Jordan, Malaysia, Mexico, the Islamic Republic of Pakistan, the Republic of the Sudan and the United States of America was formed ( Table 3). Reasons for nonparticipation of members of the initial 30 experts included insufficient exposure to displaced populations and an inability to participate regularly in the Delphi method process. The process did not specifically address the effects of Covid-19 but was carried out during the pandemic. Of the selected Global Working Group participants, six experts treat asylum seekers, nine treat refugees, and five treat internally displaced persons ( Table 3).

Background information of Global Working Group participants <sup> <xref ref-type="other" rid="FN2">2</xref> </sup>.
Participant Country of residence Specialty Affiliations Treat asylum seekers Treat refugees Treat internally displaced persons Primary countries of origin of displaced people treated
Farrah Mateen USA Associate Professor of Neurology Massachusetts General Hospital; Harvard Medical School yes yes yes Guinea, Sierra Leone, Syria, Iraq, Mexico
Foksouna Sakadi Chad Neurologist General Hospital of National Reference yes yes no Central African Republic, South Sudan, Sudan, Libya, Nigeria
Fu-Liong Hiew Malaysia Neurologist Kuala Lumpur Hospital yes yes no Myanmar (Burma), Syria
Ildefonso Rodriguez-Leyva Mexico Professor of Neurology Universidad Autonoma de San Luis Potosi; Hospital Central Dr. Ignacio Morones Prieto yes no yes Mexico, various countries in Central and South America
Jera Kruja Albania Professor of Neurology University of Medicine, Tirana; University Hospital Center Mother Teresa no yes no Iran
Mohammad Wasay Pakistan Professor of Neurology Aga Khan University Hospital no yes yes Afghanistan, Myanmar (Burma), Pakistan
Osheik AbuAsha Seidi Sudan Professor of Neurology University of Khartoum, Soba University Hospital yes yes yes Eritrea, Ethiopia, Sudan, South Sudan
Saad Abdel-Aziz Jordan Physician; Public Health Specialist Médecins Sans Frontières (MSF) Jordan; Johns Hopkins Bloomberg School of Public Health yes yes no Syria
Shahriar Nafissi Iran Professor of Neurology Tehran University of Medical Sciences; Shariati Hospital no yes yes Afghanistan, Iraq, Iran
Round one of the Delphi method

In mid-March, the round one survey was distributed to the Global Working Group. The survey requested each expert to provide their background information in addition to listing their experiences with displaced people. The main survey questions asked the experts to rank the top ten neurological interventions to address the neurological needs of displaced people, ignoring costs; to rank a list of demographic factors of displaced people that make the largest difference in providing neurological care; and to list other considerations that are important when assessing the needs of displaced people. The experts were informed that “concrete” refers to material interventions such as medical supplies (e.g.: phenobarbital, thiamine, head CT). Once all Global Working Group participants completed the round 1 survey, the results were circulated to the group. A total of 41 concrete neurological needs were listed and 20 important issues that were ancillary to the actual provision of a treatment were listed by the Global Working Group participants. In early April, the round one discussion was convened via a face-to-face Zoom call to review the results of the survey, provide rationale for interventions listed, and provide suggestions to incorporate into the next round of the Delphi method.

 Round two of the Delphi method

Based on the results from round one, 14 larger categories of neurological interventions were developed, under which 33 specific items were listed after feedback. The experts were then asked to select and prioritize a list of ten interventions from the total list of interventions established from the previous round. The experts were also asked to rank the interventions from 1–4 based on the degree of necessity (1- absolutely necessary to 4- nice to have). In late May, the round two discussion took place via a face-to-face Zoom call with seven of the experts to provide feedback on the results of the round two survey. A comprehensive list of specific items was established within each category, and the experts agreed to rate specific items instead of categories for the final survey.

 Round three of the Delphi method

In early June, the round three and final survey was circulated among the experts. It requested that each expert rate 41 specific items on a scale of 0–100 independently, with 0 being not necessary and 100 being absolutely necessary for the treatment of displaced people. The ratings for these 41 interventions were then averaged from across the working group and ranked from highest mean rating to lowest. For select categories (anti-seizure, anti-headache/pain, neuro-psychiatric and cardiovascular/neurovascular), each expert was asked to select the top priority medication when treating displaced people. The number 1 priority and number 2 priority items for each of these categories was documented based on the percent of working group members that reached consensus on a given intervention.

 Cost assessment

A cost assessment was conducted for the top ten interventions, using a basic economic cost estimation model. The estimation for these interventions is provided in Table 4. These cost estimations used the most affordable price points available in the pharmaceutical market through online searches of goodrx.com in June 2020. The assessed price points were individual pricings and do not take into account large-scale price negotiations that an international organization could leverage. An illustrative dosage for each medication was selected based on prescribing patterns that are common for treating neurological conditions in adults. This assessment projected the population of displaced people needing care based on estimations made by a variety of sources such as the Center for Disease Control (CDC) and the World Health Organization (WHO). For imaging interventions, the percentage of displaced people requiring care was projected using the average MRI and CT scan usage estimates of >20 European countries from Eurostat. These data were used since many other countries do not have data collected or readily available on these interventions.

Highest ranked neurological interventions for displaced people.
Rank Intervention Rating 3 Estimated % of population in need Annual cost estimation (1,000 $USD) 4
Imaging and tests
1 CT scan 90.9 8 2,200,000
2 MRI scan 89.8 6 1,700,000
3 Basic blood tests 5 80.7 20 320,000
Medications and supplements
1 Levetiracetam 89.1 0.4 31,000
2 Acetylsalicylic acid 86.6 0.24 3,100
3 Carbamazepine 86.3 0.4 47,000
4 Paracetamol 81.8 3 46,000
5 Sodium valproate 81.7 0.4 70,000
6 Steroids 79.4 0.001 38
7 Anti-tuberculous medication 78.0 0.13 24,000
Results Ranking of supplemental considerations important for neurological care

Throughout the iterations of surveying and discussions, the Global Working Group determined important contextual considerations ancillary to the provision of neurological care for displaced people that were not concrete neurological interventions. During the round one discussion, consensus was reached that the economic status of the displaced person’s host country made the largest difference on the approach to providing neurological care to displaced people, followed by the stage of the displaced person in the asylum process and the economic status of the displaced person’s country of origin. A list of contextual considerations when providing neurological care to displaced people, ranked based on percent consensus that the intervention is a top consideration, is provided in Table 1.

 Top neurological interventions for displaced people

A comprehensive, ranked list of 41 concrete neurological interventions for displaced people determined through the Delphi method is provided in Table 2. The top ten concrete neurological interventions to treat displaced people are provided in Table 4. They include two imaging interventions (CT scans and MRI scans) and three anti-seizure medications (levetiracetam, carbamazepine and sodium valproate).

For select categories of neurological interventions, the Global Working Group was asked to select the one medication they would use to treat displaced people. Table 5 provides the results of this prioritization, which was determined for anti-seizure, anti-headache/pain, neuropsychiatric, and cardiovascular/neurovascular treatments, along with cost estimations.

Top two priority treatments for select treatment categories.
Type of treatment Top rated intervention % consensus Cost per pill ($USD)
Anti-seizure 1) Levetiracetam 44 0.15
1) Carbamazepine 44 0.23
Anti-headache/pain 1) Ibuprofen 6 33 0.12
1) Amitriptyline 33 0.17
1) Paracetamol 33 0.03
Neuro-psychiatric 1) Escitalopram 67 0.24
2) Fluoxetine 33 0.12
Cardiovascular/ neurovascular 1) Acetylsalicylic acid 75 0.05
2) Clopidogrel 25 0.26
Assessing the costs of the intervention

As calculated in June 2020, the annual cost of providing the most important neurological interventions for the entire displaced population would be 220 million USD for medications and 4.2 billion USD for imaging and tests. The cost estimations for each of the most important neurological interventions are provided in Table 4 along with an estimated percent of displaced people in need of each intervention. This paper assumes a monotherapy anti-seizure treatment. As such, an average of the annual cost estimations of the three anti-seizure medications in the top 10 list (levetiracetam, carbamazepine and sodium valproate) was used when calculating the total annual cost for medications.

 Discussion

Through this novel collaboration across several continents, the Global Working Group offers foundational recommendations on the most pressing neurological interventions. Though WHO guidelines for mostly psychiatric conditions have been released as the Mental Health Gap Action Programme (mhGAP), there are currently no registries, surveilance or standards for specifically treating the neurological needs of displaced people in humanitarian contexts 21 . Calls for action such as the World Health Assembly’s Intersectional Global Action Plan on Epilepsy and Other Neurological Disorders indicate growing interest in addressing these needs 22 .

We build upon previously conducted economic evaluations of the neurological treatment of displaced people, which have been limited to micro-scale cost assessments of specific populations 23 . As our cost assessment of top concrete neurological interventions indicates, the complete coverage of major neurological treatments among displaced people (such as seizures and chronic pain) would be relatively inexpensive. Especially in light of the high degree of disability caused by neurological conditions, this cost assessment suggests that focusing resources toward treating such conditions could be cost-effective and also dramatically improve the overall wellbeing of many displaced people. It is also important to stress that the price points for these interventions may in fact be much lower in the context of treating displaced people, since much of this population resides in lower income countries where the costs of production are much lower than higher income countries, where data on medication and other procedures are more readily available. This price difference would particularly be important to consider in the case of MRI scans, CT scans, and basic blood tests, where the only data available factor in the cost of labor. This cost is much higher in a high-income country context and consequently may not accurately reflect the true cost that would be incurred in the context in which a displaced person is treated. Furthermore, this finding could also suggest that more cost-effective ways of implementing these procedures for displaced people-- such as the provision of portable MRIs currently being piloted in low-income contexts-- should be explored to ensure that a minimum viable procedure is in place for displaced persons, if the status quo is too expensive to execute 24– 26 .

Study design: strengths and limitations

There are several strengths to this study. There has not been an expert-proposed set of recommendations of top neurological interventions for displaced people to date. These results create a foundation for future research and engagement for neurological care for displaced people. The Delphi method enabled the Global Working Group members to respond not only from their personal expertise in treating the neurological needs of displaced people but also from the insights from other members, improving the collective decision-making process. The geographic breadth of the Global Working Group members’ countries of residence, coupled with the diverse nationalities and official statuses of the displaced people they treat, makes the scope of the results more broadly applicable across a wider array of contexts. By synthesizing the experiences of a representative sample of neurologists and other providers treating displaced people globally and providing an estimation for how much these interventions may cost, these results facilitate the action of international organizations and funders seeking to improve the condition of displaced people. The findings thus help fill a critical gap in the understanding of neurological needs of displaced people with a pragmatic and expert-sponsored set of concrete recommendations.

There are also several limitations to our approach. While the study incorporated the expertise of 8 neurologists and one public health expert who have direct experience treating and assessing the neurological conditions of displaced people, inclusion of experts from more countries and other healthcare professions (such as nursing or emergency relief staff) could have added a greater variety of perspectives. We chose to inquire the most appropriate interventions agnostic to cost; other approaches could have included cost as an important, pragmatic consideration. However, ignoring cost in selection of priorities allows the list to remain relevant as costs change for medications and technologies over time. Similarly, we could have instead asked about common symptoms rather than neurological diseases in general. Given that many medications and interventions are overlapping across diseases, the current approach was selected.

Similarly, the estimated costs for implementing top neurological interventions have many limitations, since there is a great degree of variation in the pricing of items based on the vendors within a certain country context and the availability of pricing data. Several of the interventions also have multiple dosages, which were not specified during the rounds of the Delphi method. This study also only considers the cost of a single MRI or CT scan and does not factor in the costs of establishing the infrastructure and maintenance required for such imaging.

 Future directions

There are several steps that could be taken in order to act upon these recommendations. Since several of the items selected as most important through the Delphi method process are preliminarily estimated to be relatively inexpensive, funders that support relief aid for displaced people could allocate a portion of their budget for neurological treatments according to these cost estimations. International organizations addressing the needs of displaced people must then source these items from vendors in the regions in which they operate and ensure that supply chains exist to meet the needs on the ground. Challenges with availability of certain medications in specific country contexts exist, in light of the differing Essential Medicine Lists across countries.

Beyond funding and acquiring the appropriate material interventions, organizations must also take into account the present shortage of neurology expertise in the frontlines of care provision. Aside from educating more healthcare providers on the diagnosis of basic neurological conditions or training more neurologists to specifically care for displaced people, relief organizations could also allocate a portion of their budgets to promote the access and use of telehealth technology to connect frontline aid workers providing direct care to displaced people with neurologists skilled in specialized diagnoses and determining the appropriate treatment plan 27 . If these steps are taken to ensure the adequate sourcing of interventions for persons with neurological disorders in humanitarian settings, the international community could make great strides toward improving the situation for forcibly displaced people worldwide.

 Data availability

Figshare: Neurological Needs of Refugees Round 3 Survey. DOI: https://doi.org/10.6084/m9.figshare.17124125.v1.

Data are available under the terms of the Creative Commons Zero "No rights reserved" data waiver (CC BY 4.0 Public domain dedication).

1 Rating on a 0–100 scale, with 0 being not necessary and 100 being absolutely necessary for treating displaced people

2 Ordered alphabetically by first name

3 Rating on a 0-100 scale, with 0 being not necessary and 100 being absolutely necessary for treating displaced people

4 Estimation of annual cost of standard dosage/procedure for the percent of displaced population in need of a given intervention

5 Complete blood panel used as example of basic blood test.

6 Ibuprofen selected as example of NSAIDs

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Competing interests: No competing interests were disclosed.

 7 3 2022 Copyright: © 2022 Hanafi I 2022 This is an open access peer review report distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. recommendation approve

Thank you for considering me for reviewing your high-quality, well-presented manuscript. This novel report is of a great value and conveys important messages to neurologists and organizations working with displaced populations and worldwide. It is well written and provides sufficient details about the methodologies, which robustly support the illustrated conclusions. The panel is limited to nine participants, but they reflect a variety of experiences with displaced people worldwide, which intensify the generalizability of the findings.

I just have a few suggestions and concerns that I think might answer some doubts from readers when adequately managed.

Two points were in my opinion overlooked in the introduction, which are the lack of specialized neurologists in areas of conflict and the lack of epidemiological reports published during times of war. For instance, physicians including neurologists in Syrian centers dropped during the first few years of war (Fouad et al., 2017 1 ), which put more pressure and drained the capacities of the other remaining doctors impacting the quality of care (Mohamad et al., 2021 2 and Hanafi et al., 2021 3 ).

Although, esteemed recommendations on increasing neurology experts on the frontlines and telemedicine were raised. Readers might be additionally curious about the opinions of the panel regarding the extent of experience lacking in treating displaced populations, and how they would prioritize increasing the number of neurologists in comparison with the other logistic needs presented on the manuscript. Additionally, one further possible future perspective of the manuscript can be suggesting a modulation of the neurology curriculum of med-schools (e.g., increasing the training hours of more prevalent disorders) in areas where a high percentage of displaced populations is perceptible (Latifeh et al., 2021 4 ).

I believe readers with rather limited clinical experience, like me, might wonder about the reason behind the detailed depiction of antiepileptic drugs while several of them can be used interchangeably in places with limited resources. In contrast, I see that the authors combined all basic blood tests in one category. May the authors please provide more information on the reason behind that? Based on that, it is also not very clear to me whether the estimation of population in need (table 4) for the three antiepileptic drugs overlap or sum up?

I have a minor wonder regarding the following sentence: “An illustrative dosage for each medication was selected based on prescribing patterns that are common for treating neurological conditions in adults.”. Although the illustrative dosage concept is understandable and necessary in such kinds of analysis, I wonder specifically about the long-term medications like antiepileptic drugs. What is generally the time window (i.e., length of therapy) considered when estimating the cost?

I have another concern regarding the cost estimation of the imaging interventions. The study says they were projected from estimates in European countries. However, more details on that projection can be of high importance to the readers. Would the esteemed opinions of the authors agree that imaging studies required in areas of conflicts should be substantively higher than the ones ordered in the relatively safe Europe during the last few decades? Would they also agree that the ratio CT:MRI scans might deviate for the displaced populations from other stable wealthy populations?

I would add one point to the limitations that were adequately discussed by the authors. Although the experience of the panel allows them to speak on refugees, asylum seekers, and internally displaced populations (table 3), the article does not present any divergence of the opinions between the three groups, mixing all the views in one category that might be heterogenous regarding some points of the analysis.

Nevertheless, these suggestions do never affect my recommendations to index this valuable and vital article that drops attention to the neurological care of vulnerable populations and tries to alleviate their suffering worldwide.

Is the work clearly and accurately presented and does it cite the current literature?

Yes

If applicable, is the statistical analysis and its interpretation appropriate?

Yes

Are all the source data underlying the results available to ensure full reproducibility?

Yes

Is the study design appropriate and is the work technically sound?

Yes

Are the conclusions drawn adequately supported by the results?

Yes

Are sufficient details of methods and analysis provided to allow replication by others?

Partly

Reviewer Expertise:

Internal medicine, Neurology, Neuroscience, Evidence-based medicine, Deep brain stimulation, Movement disorders

I confirm that I have read this submission and believe that I have an appropriate level of expertise to confirm that it is of an acceptable scientific standard.

References : Health workers and the weaponisation of health care in Syria: a preliminary inquiry for The Lancet –American University of Beirut Commission on Syria. The Lancet .2017;390(10111) : 10.1016/S0140-6736(17)30741-9 2516-2526 10.1016/S0140-6736(17)30741-9 : Workplace violence toward resident doctors in public hospitals of Syria: prevalence, psychological impact, and prevention strategies: a cross-sectional study. Human Resources for Health .2021;19(1) : 10.1186/s12960-020-00548-x 10.1186/s12960-020-00548-x : Medical research conduct and publication during higher education in Syria: attitudes, barriers, practices, and possible solutions. Research Square .2021; 10.21203/rs.3.rs-382753/v2 10.21203/rs.3.rs-382753/v2 : Crisis-based psychiatry curriculum update: A cross-sectional study and an expert reflection from Syria. Asian J Psychiatr .2021;61: 10.1016/j.ajp.2021.102681 102681 34004462 10.1016/j.ajp.2021.102681 Mateen Farrah

Competing interests: No competing interests were disclosed.

 12 3 2022

We thank the reviewer for these suggestions. Each of the queries has been addressed in the new version of the manuscript. The section on the update for readers details these changes. Specifically, we updated the introduction to include the very important points that: (1) the epidemiology of neurological disorders are not well documented in humanitarian crises; (2) the number of neurologists in most armed conflicts is very few and may become fewer in times of conflict; (3) conflicts/humanitarian emergencies can be protracted and data may be a snapshot of a more longitudinal process; and (4) health care facilities and workers can be targets of armed conflict. 

Several references (as recommended) were added to include important data from the Syrian situation.

The length of time for estimating medicines' costs for chronic conditions (e.g. epilepsy) was one year. 

The importance of antiseizure medicines was apparent in this consensus process. We include some potential explanations in the paper: (1) the importance of epilepsy as a treatable and disabling condition, and (2) the use of some of these medicines for dual purposes, such as treatment of comorbid pain.

We have our raw data available on figshare which may provide some elements of heterogeneity in the process. Finally, we clarify that our interventions for prioritization are "concrete" and we did not include purchase of human resources for health (e.g. training a new neurologist) in that prioritization, considering separate from the current process. Thank you for your helpful comments and sharing your knowledge on this topic.

 10.21956/gatesopenres.14704.r31816 Reviewer response for version 1 Schmutzhard Erich 1 Referee Neurological Intensive Care Unit, Department of Neurology, Innsbruck Medical University, Innsbruck, Austria

Competing interests: No competing interests were disclosed.

 3 3 2022 Copyright: © 2022 Schmutzhard E 2022 This is an open access peer review report distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. recommendation approve

In a time, when more than one percent (1%) of the world’s population has to be perceived as forcibly displaced it is highly in time that the medical community, including neurologists from all over the world, are aware and must be made aware of diseases and their emergency diagnostic and therapeutic management steps in order to allow – according to Hippocrates – the best possible management of all those being in need. The authors, working in African, Asian, North- and Central American and European countries clearly show in this manuscript that they are aware of these needs and, even more, are well aware that this knowledge needs to be spread amongst the entire community of neurologists and medical doctors respectively.

Therefore, I suggest indexing this well-written and highly needed manuscript as it stands.

Is the work clearly and accurately presented and does it cite the current literature?

Yes

If applicable, is the statistical analysis and its interpretation appropriate?

Yes

Are all the source data underlying the results available to ensure full reproducibility?

Yes

Is the study design appropriate and is the work technically sound?

Yes

Are the conclusions drawn adequately supported by the results?

Yes

Are sufficient details of methods and analysis provided to allow replication by others?

Yes

Reviewer Expertise:

Neurology, Tropical Medicine, in particular Tropical Neurology, Emergency and Critical Care Neurology

I confirm that I have read this submission and believe that I have an appropriate level of expertise to confirm that it is of an acceptable scientific standard.

Mateen Farrah

Competing interests: No competing interests were disclosed.

 12 3 2022

The authors thank the reviewer for his review and thoughtful comments.