- Research article
- Open Access
Validation of depressive symptoms, social support, and minority stress scales among gay, bisexual, and other men who have with men (GBMSM) in Nigeria, Africa: a mixed methods approach
BMC Public Health volume 20, Article number: 1023 (2020)
Gay, bisexual, and other men who have sex with men (GBMSM) in Nigeria experience social marginalization, discrimination and violence due to their sexual identity, which may negatively impact physical, mental, and sexual health outcomes. Studies on GBMSM in Africa utilize measurement scales developed largely for populations in the Global North. The validity and reliability of these instruments—to our knowledge—have never been thoroughly investigated among GBMSM in Nigeria. The aim of the current study was to determine the validity and reliability of the English versions of the Center for Epidemiologic Studies Depression Scale (CESD-R), Multidimensional Scale of Perceived Social Support (MSPSS), and LGBT Minority Stress Measure among a large multi-state sample of GBMSM Nigeria.
Between January and June 2019, we conducted cognitive interviews (N = 30) and quantitative assessments (N = 406) with GBMSM in Nigeria. The cognitive interviews assessed comprehension of scale items and elicited suggestions for scale modifications. The quantitative assessment was used to gather psychosocial health data and to evaluate psychometric properties and construct validity of the modified scales. We utilized confirmatory factor analysis to assess factor structure, correlation coefficients, and Cronbach’s alpha to examine scale validity and internal consistency.
Based on participant feedback from the cognitive interviews, we made slight modifications (i.e., culturally appropriate word substitutions) to all three scales. Results of quantitative analyses indicated good psychometric properties including high factor loadings, internal consistency and construct validity among the CESD-R, MSPSS, and LGBT Minority Stress Measure among GBMSM in Nigeria.
These results suggests that modifying research scales to be more culturally relevant likely do not jeopardize their validity and reliability. We found that modified scales measuring depressive symptoms, perceived social support, and minority stress among GBMSM in Nigeria remained valid. More research is needed to explore whether the psychometric properties remain if the scales are translated into broken English (Pidgin) and other traditional Nigerian languages (Yoruba, Igbo and Hausa).
Nigerian gay, bisexual, and other men who have sex with men (GBMSM) experience marginalization, discrimination and violence due to their sexual orientation and same-sex sexual activity [1,2,3], which may negatively impact physical, mental, and sexual health outcomes [4, 5]. The minority stress model posits that the prejudice, discrimination, and stigma experienced by sexual and gender minority individuals—as a result of sexual or gender identity—contributes to higher levels of stress, which may lead to mental health problems  and sexual risk behaviors [7, 8]. Prior studies have found high levels of mental health problems (i.e. depression, anxiety, suicide ideation, and post-traumatic stress disorder (PTSD)) among Nigerian GBMSM [9, 10]. Consequently, it is important to explore these topics, especially considering the vulnerable and hostile situations Nigerian GBMSM are constantly confronted with.
According to the minority stress model, the pathway between sexual and gender minority stress and mental health problem may be moderated by social support and coping strategies . Several studies have been conducted among GBMSM that provide evidence for the theoretical underpinnings and pathways asserted by this model [11,12,13]; additionally, similar findings have been observed among sexual minority women [13,14,15], and transgender populations [16,17,18]. Consequently, accurately measuring depressive symptoms, social support, and minority stress is important to appropriately intervening to improve the quality of life of Nigerian GBMSM.
Most quantitative studies conducted among African GBMSM utilize research instruments and scales developed and validated in the Global North (especially in North America and Europe) and include participants from those settings. Consequently, these scales may contain cultural references and colloquialism that may not be applicable, easily understood, or culturally relevant to African GBMSM. Formative research on the psychometric properties of these scales is essential to accurately quantify depressive symptoms, social support, and minority stress, and subsequently devise intervention strategies to effectively address these issues.
The aim of the current study was to adapt—after cognitive testing—and subsequently assess the validity, reliability, and psychometric properties of three widely used psychosocial measures in a large multi-state sample of GBMSM in Nigeria. The Center for Epidemiologic Studies Depression Scale (CESD-R)  is a 20-item scale used to screen for clinically significant depressive symptoms. The Multidimensional Scale of Perceived Social Support (MSPSS) , is a 12-item validated scale used to measure perceived social support from family, friends, and significant others. The LGBT Minority Stress Measure , is a 50-item scale developed to measure stress-related components of the minority stress model: prejudice events, victimization events, anticipation of rejection, identity concealment, internalized anti-LGBT stigma, everyday discrimination, and community support. These scales have been widely utilized to measure depressive symptoms, social support, and minority stress among GBMSM [22,23,24,25]. While many studies have investigated the psychometric characteristics of these scales, a vast majority have been conducted in the Global North (largely in the United States of America) [21, 26, 27]. The validity and reliability of these instruments—to our knowledge—have never been investigated among GBMSM in Nigeria.
We utilized a sequential exploratory mixed method design , which is a methodological approach that combines qualitative and quantitative data collection and analysis in phases. In the first phase, we collected qualitative data on the cultural relevancy of the unmodified research instruments (cognitive testing) and analyzed the data. Next, we modified the instruments, based on the feedback from participants, and carried out the quantitative phase, where we tested the psychometric properties of the modified research instruments.
Participants and procedures
In January 2019, we recruited 30 GBMSM from Delta (n = 15) and Lagos (n = 15), Nigeria through local community-based organizations (CBOs) to participate in one-on-one cognitive interviews to assess cultural relevance and comprehension of the CESD-R, the MSPSS, and the LGBT Minority Stress Measure. Participants were asked to provide suggestions for modification of these scales to make them easily understandable by Nigerian GBMSM. Inclusion criteria for study participation were: 1) 18 years of age or older; 2) currently residing in Delta or Lagos; 3) cis-gender male; and 4) history of sex with another male. Peer educators at the two CBOs shared information about the cognitive testing with the target population at various community-centered events (e.g., HIV testing and counseling, health education, advocacy events, etc.) and provided study contact information to individuals who were interested. Study activities took place in private offices within our partner CBOs.
The theoretical groundings for our cognitive testing approach emanated from the question-answer model, which proposes that in order for participants to accurately answer a question, they must: 1) understand the question, 2) retrieve the necessary information from their long-term memory, 3) decide what information is necessary to respond to the question, and 4) answer the question . First, we read out-loud the instructions for each scale to participants. Next, we read each item and probed whether participants understood what the question was asking. We had the participants repeat back what they believed the question was asking. Next, we asked how they would modify the question to be more easily understood by and relevant to GBMSM in Nigeria. This protocol was repeated for each item within a scale. Lastly, participants were asked what overall construct the scale aimed to measure. This protocol was repeated for each individual scale. All interviews were digitally recorded. Based on feedback from the cognitive interviews and iterative feedback from senior authors, the scales were modified and subsequently administered to a large, multi-state sample of GBMSM in Nigeria.
Quantitative scale validation
Participants and procedures
Between March and June 2019, 406 GBMSM were recruited from Abuja (n = 107), Delta (n = 102), Lagos (n = 112), and Plateau (n = 85) through community-based organizations (CBOs) and snowball sampling. Peer educators, outreach workers, and key opinion leaders from CBOs based in the four study sites provided potential participants with information about the study and a study contact number. Individuals who showed interest in the study were screened for eligibility. Eligibility criteria were: 1) 18 years of age or older; 2) currently residing in one of four Nigerian states (Abuja, Delta, Lagos or Plateau); 3) identify as cis-gender male (i.e., participants who were assigned male sex at birth and currently identify as men); and 4) any self-reported history of sex (oral or anal) with another male. Eligible participants were asked to provide information about the study to other members of their social network. Data collection was conducted in the private offices of each CBO. Each participant provided verbal informed consent and completed the quantitative survey with the help of a trained research assistant. The survey took 1 to 1.5 h to complete. Upon completion of the survey, participants were compensated with 4000 Naira (equivalent to 10 US dollars). The study protocols were approved by the institutional review boards at Brown University and the Nigerian Institute of Medical Research.
Depressive symptoms were assessed using the CESD-R scale , a 20-item self-report scale used to screen for clinically significant depressive symptoms. These instructions were given to participants prior to completing this scale: “Below is a list of the ways you might have felt or behaved. Please check the box to tell me how often you have felt this way in the past week.” The items were scored on a 4-point scale ranging from 0 “not at all or less than one day” to 3 “5-7 days or nearly every day for two weeks”, and summed, with a higher score indicating more severe depressive symptoms. We investigated the psychometric properties of the one-factor structure of the CESD-R to assess overall depressive symptoms, which has been demonstrated to have adequate data fit characteristics [26, 30].
Perceived social support
Perceived social support was assessed using the MSPSS , a 12-item self-report scale used to measure perceived social support from family, friends, and significant other. These instructions were given to participants prior to completing this scale: “We are interested in how you feel about the following statements. Read each statement carefully. Indicate how you feel about each statement.” The items were scored on a 7-point Likert scale ranging from 1 “very strongly disagree” to 7 “very strongly agree”. Scores were summed and higher scores indicated greater perceived social support. We investigated the psychometric properties of the three-factors structure of the MSPSS, which assesses three distinct sources of social support (family, friends, and significant other), which has been demonstrated to have adequate data fit characteristics [20, 27, 31].
Minority stress scales
Five distinct constructs within minority stress were assessed using the LGBT Minority Stress Measure : community connectedness, internalized stigma, rejection anticipation, identity concealment, and victimization events. These instructions were given to participants prior to completing these scales: “The next few questions will ask you about the LGBT community. LGBT stands for Lesbian, Gay, Bisexual, and Transgender individuals. Please think about your own identity within the community and your relation with the LGBT community when answering these questions.” Community connectedness was assessed using five items and scored on a 5-point Likert scale ranging from 1 “Strongly Disagree” to 5 “Strongly Agree” with a higher score indicating higher levels of community connectedness. Internalized stigma was assessed using 3 items and scored on a 5-point Likert scale ranging from 1 "Strongly Disagree to 5 “Strongly Agree” with a higher score indicating higher levels of internalized stigma. Rejection anticipation was assessed using four items and scored on a 5-point Likert scale ranging from 1 “Never Happens” to 5 “Happens all the time” with a higher sore indicating higher levels of rejection anticipation. Identity concealment was assessed using four items and scored on a 5-point Likert scale ranging from 1 “Never Happens” to 5 “Happens all the time” with a higher sore indicating higher levels of identity concealment. Victimization events was assessed using three items and scored on a 5-point Likert scale ranging from 1 “Never Happens” to 5 “Happens all the time” with a higher sore indicating higher levels of self-reported experiences of victimization events. We investigated the psychometric properties of the five distinctive constructs of minority stress that we were interested in (community connectedness, internalized stigma, rejection anticipation, identity concealment, and victimization events).
Measures to assess construct validity
To assesses the validity of CESD-R, MSPSS, and the LGBT Minority Stress Measure, we chose two measures we hypothesized would be significantly (convergent validity) and non-significantly (divergent validity) correlated (Pearson correlation coefficient) with our measures.
The purpose of convergent validity is to assess whether the scales are significantly related as predicted . The UCLA Loneliness Scale was used to assess convergent validity as past research has demonstrated significant positive associations between depressive symptoms, minority stress and loneliness [33, 34]; and a significant negative association between social support and loneliness . Loneliness was assessed using the UCLA Loneliness Scale , an 8-item validated scale that measures various aspects of loneliness on a 4-point Likert scale ranging from 1 “Never” to 4 “Often”. Scores were summed and higher scores indicated greater perceived loneliness.
The purpose of divergent validity is to examine whether the construct of interest is different from a separate concept . Healthcare utilization was used to assess divergent validity as we hypothesize that it would have smaller association with experiences of minority stress, depressive symptoms, and perceived social support. Healthcare utilization was assessed by asking participants: “When was the last time you went to a doctor for a medical check-up? A routine checkup is a general physical exam, not for a specific injury, illness or condition” with possible options response “within the last year,” “within the last two years,” “within the last five years,” “five years or more ago,” or “never”.
All interviews were transcribed by a professional transcribing company based in Nigeria. As English is the official language of Nigeria, scales were administered in English and no translation services were necessary. We analyzed the cognitive interviews consistent with best practice recommendations [37, 38] and previous research [39, 40]. The transcripts were independently analyzed by one study team member. Analyses were structured around the constructs of the question-answer model explained above. Each question within each scale was analyzed independently. We complied a comprehensive list of all suggested changes for each individual question. Modifications were made to individual questions when two or more participants suggested changes to that question. Next, all suggested modifications were considered and a list of three or less possible revised questions were noted. After consultation with a group of experts—consisting of GBMSM and researchers who work with this population in Nigeria—the final version of the revised questions were reached. The most parsimonious and easily understandable questions were selected.
Confirmatory factor analysis
We used MPlus to conduct confirmatory factor analysis (CFA). CFA is a psychometric assessment that allows for testing of an a priori factor structure of a specific measurement instrument and estimation of latent constructs while correcting for measurement errors . We conducted CFA, rather than exploratory factor analysis, because the scales we were validating have clearly defined subscales and constructs and have been widely utilized within the field of behavioral and public health research. Participants with any missing responses were excluded from the CFA. To assess fit of the model [41, 42], we examined the root mean square error of approximation (RSMEA) values (< 0.06 considered excellent and < 0.08 considered good); comparative fit index (CFI) and tucker-lewis index (TLI) values (< 0.95 considered excellent and < 0.90 considered good); and the akaike information criterion (AIC) assessed model parsimony, with a significant decrease in AIC suggesting a better fitting model.
Cognitive interviews demographics (N = 30)
As seen in Table 1, participants ranged in age from 20 to 40 years (mean = 29.1, standard deviation [SD] = 5.3), and half (n = 15, 50.0%) of participants identified as gay/homosexual. Most participants (n = 19, 63.3%) reported their relationship status as single and more than three-fourths (n = 23, 76.7%) had a university education or higher.
Cognitive interview findings
Of the 20 statements contained in the CESD-R scale, 8 were modified (Table 2). A majority of the modifications constituted changing a few words to make the phrase more understandable (for example, we changed “I had trouble keeping my mind of what I was doing” to “I had trouble concentrating on what I was doing”). Only one of the statements was completely modified (“I could not get going” to “I lacked motivation”).
Of the 12 statements contained in the MSPSS, 8 were modified (Table 2). In the significant other subscale, “special person” was replaced with “significant other”. The rest of the changes were minor word substitutions such as changing “I can talk about my problems with my family” to “I can share my problems with my family”.
Of the combined 16 statements contained in the 5 subscales of the LGBT Minority Stress Measure, 11 were modified (Table 2). A majority of the modifications constituted changing a few words to make the phrase more understandable (for example, we changed “I feel like I am a part of the LGBT community” to “I feel like I am a member of the LGBT community”). A few statements were completely changed (for example, we changed “If I was offered the chance to be someone who is not LGBT I would accept the opportunity” to “If I could change from being LGBT to be straight, I would.”
Quantitative sample demographics (N = 406)
As seen in Table 3, participants ranged in age from 18 to 60 years (mean = 29.2, SD = 5.8), the majority (n = 238, 58.6%) identified as bisexual, and 61.6% were single. We had an ethnically diverse sample (20.3% were Igbo, 17.8% were Hausa, 17.7% were Yoruba, 15.7% were Urhobo, and many more ethnic groups were represented) Most (n = 238, 61.8%) participants reported experiencing high financial hardship and 22.3% reported a history of incarceration (n = 86). One-fourth (n = 99, 24.8%) of participants reported living with HIV and one third (n = 124, 32.3%) reported a sexually transmitted infection diagnosis in the previous year.
Confirmatory factor analysis results (N = 406)
All items significantly loaded onto the one-factor depression construct except item #9 (I slept much more than usual), (β = 0.25) (Table 4). The fit indices for the one-factor model were acceptable (RMSEA = 0.10; CFI = 0.82; TLI = 0.80). This provides evidence that the CESD-R is a reasonable instrument to ascertain depressive symptoms among Nigerian GBMSM.
All items significantly loaded onto their respective factors (Table 5). The three-factor model measures three distinct sources of perceived social support (family, friends, and significant other). The fit indices for the three-factor model were acceptable (RMSEA = 0.09; CFI = 0.92; TLI = 0.90). The good fit statistics and multidimensional nature of social support leads us to conclude that the three-factor model is parsimonious.
LGBT minority stress scales
All items significantly loaded onto their respective factors (Table 6). The five-factor model measures five distinct experiences of minority stress (community connectedness, internalized stigma, rejection anticipation, identity concealment, and victimization events). The good fit statistics (RMSEA = 0.08; CFI = 0.91; TLI = 0.90) and multidimensional nature of minority stress leads us to conclude that these measures accurately assessed various dimensions of experiences of minority stress among Nigerian GBMSM.
Scale properties (N = 406)
Scores on the CESD-R (20 items) ranged from 0 to 55 (M = 11.4, SD = 12.2). Internal consistency was high (Cronbach’s α = 0.93). Scores on the MSPSS (12 items) ranged from 12 to 84 (M = 58.4, SD = 12.6). Internal consistency was high (Cronbach’s α = 0.86). Scores on the community connectedness subscale (5 items) ranged from 5 to 25 (M = 19.8, SD = 4.5). Internal consistency was high (Cronbach’s α = 0.86). Scores on the internalized stigma subscale (3 items) ranged from 3 to 15 (M = 8.0, SD = 3.5). Internal consistency was high (Cronbach’s α = 0.80). Scores on the rejection anticipation subscale (4 items) ranged from 4 to 20 (M = 9.8, SD = 4.0). Internal consistency was acceptable (Cronbach’s α = 0.72). Scores on the identity concealment subscale (4 items) ranged from 4 to 20 (M = 13.1, SD = 4.8). Internal consistency was high (Cronbach’s α = 0.86). Scores on the victimization events subscale (3 items) ranged from 3 to 15 (M = 5.4, SD = 3.2). Internal consistency was very high (Cronbach’s α = 0.92).
Construct validity analysis
To evaluate the convergent validity (Table 7), correlations (Pearson’s coefficients) were conducted between the CESD-R, the MSPSS, the LGBT Minority Stress Measure, and the UCLA Loneliness Scale. We hypothesized that there will be a positive significant relationship between depressive symptoms, minority stress, and loneliness. We also hypothesized a significant inverse relationship between perceived social support and loneliness. Upon calculation of Pearson’s coefficient, the UCLA Loneliness Scale was found to be correlated, but not strongly, in the expected direction with CESD-R (r = 0.38, p < 0.01), perceived social support (family [r = − 0.23, p < .01], friends [r = − 0.26, p < 0.01], and significant other [r = − 0.20, p < 0.01]) and all but one of the minority stress scales (community connectedness [r = − 0.09, not significant], internalized stigma [r = 0.10, p < 0.05], rejection anticipation [r = 0.23, p < 0.01], identity concealment [r = 0.14, p < 0.01], and victimization events [r = 0.19, p < 0.01]), thereby demonstrating evidence for convergent validity. Additionally, the social support and minority stress subscales were highly correlated with each other (|r| = 0.23–0.48), p < 0.01), providing evidence for concurrent validity.
To evaluate discriminant validity (Table 7), correlations (Pearson’s coefficients) were conducted between CESD-R, MSPSS, LGBT Minority Stress Measure, and healthcare utilization. We hypothesized that there will be no statistically significant relationship between depressive symptoms, perceived social support, minority stress and healthcare utilization. Upon calculation of Pearson’s coefficient, healthcare utilization was found to be not strongly correlated with the CESD-R (r = 0.02, not significant), perceived social support (family [r = − 0.01, not significant], friends [r = − 0.07, not significant], and significant other [r = − 0.05, not significant]) and all the minority stress scales (community connectedness [r = 0.09, not significant], internalized stigma [r = − 0.03, not significant], rejection anticipation [r = 0.06, not significant], identity concealment [r = − 0.02, not significant], and victimization events [r = 0.05, not significant]), thereby demonstrating strong evidence for discriminant validity.
This is the first study, as far as we are aware, to investigate the psychometric properties of key psychosocial research instruments among Nigerian GBMSM. Confirmatory factor analysis, internal consistency, and construct validity all suggest that the CESD-R, the MSPSS, and the LGBT Minority Stress Measure have strong validity and reliability in this sample, even after the modifications (21 out of 48 total question items were modified). These findings are especially strong given the geographical and ethnic group diversity represented in our sample. Results suggest that modified versions of psychosocial scales can accurately measure the same constructs as the original scales even after being modified to be more culturally relevant. The structural validity of these scales has major implications for use in future behavioral research and intervention studies among Nigerian and generally among African GBMSM.
We found that the CESD-R had high factor loadings, internal consistency and construct validity. However, an item related to sleep quality (‘I slept much more than usual’) had poor factor loading on both the overall depression scale and sleep construct within the overall scale. This might be attributable to a differing cultural conceptualization of sleep, where quality of sleep may vary vastly on basis of age, geographical location, ethnic group membership, amongst other factors. It is important to understand that sleep disturbance, as a result of depressive symptoms, can manifest as either hypersomnia or insomnia. The sleep-related question in the CESD-R only assesses hypersomnia, and not insomnia, which may partially explain the observed low factor loading. We found the one-factor measurement of depressive symptoms to be parsimonious, providing more evidence that the CESD-R might be a reliable scale to measure depressive symptoms among Nigerian GBMSM. This is especially relevant since previous studies have found high prevalence of depressive symptoms among Nigerian GBMSM [9, 10].
Similar to the CESD-R, the MSPSS had sound psychometric properties, which suggests its’ potential to accurately measure perceived social support from three distinct sources—family, friends, and significant other—among Nigerian GBMSM. This is of particular importance as social support has been hypothesized as a potential moderator of the association between experiences of minority stress and mental health problems in sexual minority communities [17, 43]. Perceived social support might reduce or diminish the effects of minority stress on mental health problems among individuals with high levels of perceived social support compared to individuals with low levels of perceived social support. Consequently, effectively measuring levels of perceived social support might help aid the design of interventions to help Nigerian GBMSM buffer the stress associated with their sexual orientation by identifying possible sources of social support and coping mechanisms.
We found that the LGBT Minority Stress Measure provided an accurate measurement of the various aspects of minority stress (community connectedness, internalized stigma, rejection anticipation, identity concealment, and victimization events). There was further evidence that each subscale independently measured a specific construct of minority stress. This finding enables researchers who are interested in specific constructs within minority stress to administer that specific subscale independent of the longer, comprehensive scale.
Our findings should be interpreted in the context of some limitations. While the sample was geographically and demographically diverse, the scales were evaluated among a sample mainly recruited through GBMSM community-based organizations and GBMSM social networks. This sampling frame limits our ability to generalize our findings to GBMSM who do not seek services at these organizations or who are outside of the social networks sampled. Further, social desirability bias may have influenced participants’ responses because the assessment was completed together with trained research assistants. Additionally, while we conducted cognitive interviews prior to administering the amended scales, we did not assess test-retest reliability, which would have provided stronger evidence of the validity of the scales after modification.
Future studies should investigate whether these psychometric properties hold for scales that have been translated into Nigerian pidgin English or native languages (Yoruba, Igbo, & Hausa). Translating these scales into the major local languages will broaden the reach of public health research by allowing individuals who feel comfortable communicating in these local languages to participate. It is also important to investigate the temporality of minority stress and its’ effects on depressive symptoms, and social support, which is best accomplished by conducting longitudinal studies.
The current study provides further evidence that cultural adaptation of research instruments does not jeopardize the validity and reliability of the original scales. If the goal of public health research is to prevent disease on a population level, it is incumbent upon population health researchers to ensure that the measurement scales that are being utilized are culturally relevant and have sound psychometric properties. Our study provides evidence that both goals can be successfully accomplished.
Availability of data and materials
Data cannot be shared publicly because of the sensitive nature of the research subjects and the context in which the research was conducted. However, a codebook of data analysis procedures which allows replication of the reported results has been deposited for public access at the Brown University depository and is available here: https://doi.org/10.26300/bmq7-9k58.
Gay, bisexual, and other men who have sex with men
Post-traumatic stress disorder
Center for Epidemiologic Studies Depression Scale
Multidimensional Scale of Perceived Social Support
Confirmatory factor analysis
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We will like to thank all the participants of the study for their time and efforts. We would also like to thank the staff at Centre for Right to Health (Abuja) Equality Triangle Initiative (Delta), Improved Sexual Health and Rights Advocacy Initiative (ISHRAI, Lagos) and Hope Alive Health Awareness Initiative (Plateau). We also extend our gratitude to Olubiyi Oludipe (ISHRAI), Bala Mohammed Salisu (Hope Alive Health Awareness Initiative), Chucks Onuoha, Prince Bethel, Eke Chukwudi, Tochukwu Okereke, Josiah Djagvidi, and Odi Iorfa Agev, for providing logistical support to the project.
This work was supported by grant R36 DA047216 from the National Institute on Drug Abuse (PI: Adedotun Ogunbajo), and the Robert Wood Johnson Health Policy Research Scholars Program. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
Ethics approval and consent to participate
The study protocols were approved by the institutional review boards at Brown University and the Nigerian Institute of Medical Research. Each participant provided verbal informed consent, due to the sensitive nature of the research project. Verbal informed consent was suggested by both review boards during the review process and thereby adopted.
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Coauthor Katie B. Biello is an Associate Editor of this journal .
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Ogunbajo, A., Iwuagwu, S., Williams, R. et al. Validation of depressive symptoms, social support, and minority stress scales among gay, bisexual, and other men who have with men (GBMSM) in Nigeria, Africa: a mixed methods approach. BMC Public Health 20, 1023 (2020). https://doi.org/10.1186/s12889-020-09127-0
- Minority stress
- Mental health
- Gay and bisexual men
- Social support