Genetics of environmental sensitivity and its association with variations in emotional problems, autistic traits, and wellbeing.

Greater environmental sensitivity has been associated with increased risk of mental health problems, especially in response to stressors, and lower levels of subjective wellbeing. Conversely, sensitivity also correlates with lower risk of emotional problems in the absence of adversity, and in response to positive environmental influences. Additionally, sensitivity has been found to correlate positively with autistic traits. Individual differences in environmental sensitivity are partly heritable, but it is unknown to what extent the aetiological factors underlying sensitivity overlap with those on emotional problems (anxiety and depressive symptoms), autistic traits and wellbeing. The current study used multivariate twin models and data on sensitivity, emotional problems, autistic traits, and several indices of psychological and subjective wellbeing, from over 2800 adolescent twins in England and Wales. We found that greater overall sensitivity correlated with greater emotional problems, autistic traits, and lower subjective wellbeing. A similar pattern of correlations was found for the Excitation and Sensory factors of sensitivity, but, in contrast, the Aesthetic factor was positively correlated with psychological wellbeing, though not with emotional problems nor autistic traits. The observed correlations were largely due to overlapping genetic influences. Importantly, genetic influences underlying sensitivity explained between 2 and 12% of the variations in emotional problems, autistic traits, and subjective wellbeing, independent of trait-specific or overlapping genetic influences. These findings encourage incorporating the genetics of environmental sensitivity in future genomic studies aiming to delineate the heterogeneity in emotional problems, autistic traits, and wellbeing.

Family History of Twinning and Fertility Traits in Nigerian Mothers of Dizygotic Twins.

Familial twinning and fertility traits were investigated in Nigerian mothers of dizygotic (DZ) twins (MoDZT; N = 972) and controls (N = 525) who responded to our person-to-person interview, which included questions on pregnancy history and family history of DZ twinning. Controls were defined as women who are not twins themselves and do not have twins in their first-degree relatives. Over 95% of the participants were Yoruba. We found that Nigerian MoDZT had an average of 4.0 (±2.6) pairs of twins among their relatives, and of these, the prevalence of DZ twins was significantly higher than that of monozygotic (MZ) twins (45.9% vs. 25.8%). Controls had an average of 0.5 (±0.4) pairs, and over 95% of the controls had no twins in their relatives. These results suggest genetic influences on DZ twinning in Nigerians. MoDZT were significantly younger in their mean age at first child, and had higher parity than controls, suggesting increased fertility in MoDZT. As compared to mothers with a single set of twins, mothers (N = 130) with multiple sets had significantly more twins among their relatives (5.4 pairs vs. 3.7 pairs) and had their first twins at a younger age (28.4 vs. 30.7 years), indicating that mothers with multiple sets of twins might have higher genetic propensity for twinning associated with earlier age at twin pregnancy. Our findings argue for genomewide association studies for DZ twinning in Nigerians, and may help to develop intervention strategies to overcome infertility/subfertility problems.

The Challenges and Opportunities for Mental Health Twin Research in Nigeria.

The recent interest in increasing diversity in genetic research can be useful in uncovering novel insights into the genetic architecture of mental health disorders - globally and in previously unexplored settings such as low- and middle-income settings like Nigeria. Genetic research into mental health is potentially promising in Nigeria and we reflect on the challenges and opportunities for twin research which may be particularly suited to Nigeria. The higher rates of twinning in Africa and Nigeria specifically, make the twin design an affordable and readily maintainable approach for genetic research in the country. Despite potential challenges with recruitment, data collection, data analysis and dissemination; the success of current efforts suggest that the twin design can tapped even further for greater impact in the country. We highlight some ways in which the scope of twin research can be increased and suggest some ways in which existing challenges can be overcome including recent Patient Participant Involve and Engagement activities.

Genetic and Environmental Influences on Sexual Orientation: Moderation by Childhood Gender Nonconformity and Early-Life Adversity.

Existing evidence indicates genetic and non-genetic influences on sexual orientation; however, the possibility of gene-environment interplay has not been previously formally tested despite theories indicating this. Using a Finnish twin cohort, this study investigated whether childhood gender nonconformity and early-life adversities independently moderated individual differences in sexual orientation and childhood gender nonconformity, the relationship between them, and the etiological bases of the proposed moderation effects. Sexual orientation, childhood gender nonconformity, and early-life adversities were assessed using standard questionnaires. Structural equation twin model fitting was carried out using OpenMx. Childhood gender nonconformity was significantly associated with reduced phenotypic variance in sexual orientation (ß = - 0.14, 95% CI - 0.27, - 0.01). A breakdown of the underlying influences of this moderation effect showed that this was mostly due to moderation of individual-specific environmental influences which significantly decreased as childhood gender nonconformity increased (ßE = - 0.38; 95% CI - 0.52, - 0.001) while additive genetic influences were not significantly moderated (ßA = 0.05; 95% CI - 0.30, 0.27). We also observed that the relationship between sexual orientation and childhood gender nonconformity was stronger at higher levels of childhood gender nonconformity (ß = 0.10, 95% CI 0.05, 0.14); however, significance of the underlying genetic and environmental influences on this relationship could not be established in this sample. The findings indicate that beyond a correlation of their genetic and individual-specific environmental influences, childhood gender nonconformity is further significantly associated with reduced individual-specific influences on sexual orientation.

Investigating the Culture Around Sexual Harassment in First-Generation Universities in Southwestern Nigeria: Protocol for a Mixed Methods Study.

BACKGROUND: The phenomenon of sexual harassment (SH) is a complex issue with multiple prongs that concerns all members of academia and raises serious challenges, particularly regarding prevention and response. SH in tertiary institutions remains a huge problem worldwide, leading to severe emotional, academic, and career difficulties, as well as undue suffering. Institutions have responded in various ways to alleviate the burden of SH with little success, especially in Nigeria. The prevalence is high but reportage is low because of the culture of silence around SH in most educational institutions. This study aims to identify factors associated with SH in tertiary institutions in Nigeria and explore factors surrounding reportage or nonreportage following the experience of SH, the institutional mechanisms to prevent and respond to SH, and the lived experience of survivors of SH. OBJECTIVE: The objective of this study was to present a study protocol that is designed to identify factors associated with the experience of SH in tertiary institutions in Nigeria, the institutional mechanisms to prevent and respond to SH, and the lived experience of survivors of SH. METHODS: A mixed (quantitative and qualitative) methods approach is used consisting of a policy review of existing antisexual harassment policies in the selected universities, a quantitative survey to determine the correlates of SH, focus group discussions to explore the perspectives of the university community concerning SH, in-depth interviews to explore the lived experiences of survivors of SH, and key informant interviews to understand the perspectives of people who provide interventions to survivors. RESULTS: This study was funded in July 2022 by the Consortium for Advanced Research Training in Africa, and data collection started in November 2022. The SH policies were comprehensive, with clear policy statements and definitions, and recognized a wide range of survivors and perpetrators. However, there was no clear mention of prevention and response to same-sex SH. Lived experiences showed negative psychological and social sequelae and little institutional support. CONCLUSIONS: This is the first study that has a component investigating same-sex SH in tertiary institutions in Nigeria. This is also one of the first studies to explore the lived experiences of survivors of SH in Nigerian universities. The findings from this study suggest that periodic evaluation of SH policy implementation will improve institutional support, thus creating safe spaces for survivors and will thereby encourage reportage and support; prevention and response strategies need to be more inclusive; and more interventions should focus on strengthening prosocial skills and healthy, equitable relationships. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): DERR1-10.2196/49126.

A cross-sectional study on resilience, anxiety, depression, and psychoactive substance use among heterosexual and sexual minority adolescents in Nigeria.

BACKGROUND: Mental health-related problems predispose alcohol and other psychoactive substances use as coping strategies. We assessed associations between resilience and anxiety symptoms, depressive symptoms, problematic alcohol, and multiple psychoactive substance use among sexual minority and heterosexual adolescents in Nigeria. METHODS: This was a secondary analysis of a subset of data generated through an online cross-sectional study conducted between 16th and 31st of October 2020. Data extracted for adolescents in Nigeria age 13-19 years were: dependent variables (alcohol use using the CAGE test, multiple psychoactive substance use, depressive symptoms using the Patient Health Questionnaire-9, and anxiety symptoms using the Generalized Anxiety Disorder-7 measure); independent variables (resilience using the Connor-Davidson resilience scale and sexual identity), and confounding factors (age and sex). Associations between dependent and independent variables were determined using multivariable logistic regression analyses after controlling for confounders. RESULTS: Of the 1419 adolescent participants, 593 (42%) were sexual minority individuals, 533 (37.6%) had high depressive symptoms, 381 (26.8%) had high anxiety symptoms, 177 (12.5%) had problematic alcohol use and 389 (27.4%) used multiple psychoactive substances. Resilience was significantly associated with lower odds of anxiety (AOR:0.96, 95% CI: 0.94-0.97, p < 0.001) and depressive (AOR:0.94, 95% CI: 0.92-0.96, p < 0.001) symptoms, problematic alcohol use (AOR:0.97, 95% CI: 0.95-0.99, p = 0.002), and multiple psychoactive substance use (AOR:0.95, 95% CI: 0.93-0.96, p < 0.001). Sexual minority adolescents had significantly higher odds of anxiety (AOR:4.14, 95% CI: 3.16-5.40, p < 0.001) and depressive symptoms (AOR:4.79; 95% CI: 3.73-6.15, p < 0.001), problematic alcohol use (AOR:2.48, 95% CI: 1.76-3.49, p < 0.001), and multiple psychoactive substance use (AOR:5.69, 95% CI: 4.34-7.47, p < 0.001). CONCLUSION: Sexual minority adolescents and adolescents with low resilience have a higher need for interventions to reduce the risk of anxiety, depression, and the use of alcohol and other psychoactive substances.

A cross-lagged twin study of emotional symptoms, social isolation and peer victimisation from early adolescence to emerging adulthood.

BACKGROUND: Emotional symptoms, such as anxiety and depressive symptoms, are common during adolescence, often persist over time, and can precede the emergence of severe anxiety and depressive disorders. Studies suggest that a vicious cycle of reciprocal influences between emotional symptoms and interpersonal difficulties may explain why some adolescents suffer from persisting emotional symptoms. However, the role of different types of interpersonal difficulties, such as social isolation and peer victimisation, in these reciprocal associations is still unclear. In addition, the lack of longitudinal twin studies conducted on emotional symptoms during adolescence means that the genetic and environmental contributions to these relationships during adolescence remain unknown. METHODS: Participants (N = 15,869) from the Twins Early Development Study completed self-reports of emotional symptoms, social isolation and peer victimisation at 12, 16 and 21 years old. A phenotypic cross-lagged model examined reciprocal associations between variables over time, and a genetic extension of this model examined the aetiology of the relationships between variables at each timepoint. RESULTS: First, emotional symptoms were reciprocally and independently associated with both social isolation and peer victimisation over time, indicating that different forms of interpersonal difficulties uniquely contributed to emotional symptoms during adolescence and vice versa. Second, early peer victimisation predicted later emotional symptoms via social isolation in mid-adolescence, indicating that social isolation may constitute an intermediate pathway through which peer victimisation predicts longer-term emotional symptoms. Finally, individual differences in emotional symptoms were mostly accounted for by non-shared environmental factors at each timepoint, and both gene-environment and individual-specific environmental mechanisms were involved in the relationships between emotional symptoms and interpersonal difficulties. CONCLUSIONS: Our study highlights the necessity to intervene early in adolescence to prevent the escalation of emotional symptoms over time and to consider social isolation and peer victimisation as important risk factors for the long-term persistence of emotional symptoms.

Moderating effects of resilience and self-esteem on associations between self-reported oral health problems, quality of oral health, and mental health among adolescents and adults in Nigeria.

BACKGROUND: There is an intersection between oral and mental health though the studies on these intersections are few. This study investigated associations between self-reported oral health problems, quality of oral health, and depression and general anxiety among adolescents and adults in Nigeria; and analysed the moderating effects of resilience and self-esteem on these associations. METHODS: In this secondary analysis, data were extracted from the database of an online survey conducted among participants 13 years and older and living in Nigeria about their self-reported psychological wellbeing. The data was collected between September and October 2020. Dependent variables were self-reported presence of oral health problems (yes/no) and self-reported quality of oral health (using a five-item scale ranging from "very good" to "very poor"). Independent variables were depressive and anxiety symptoms. Moderating factors evaluated were resilience and self-esteem. Multivariable logistic regression analysis was used to determine the associations between the dependent and independent variables after adjusting for confounders (age, sex, employment status and educational status). A path analysis was conducted to determine the moderating effects of self-esteem and resilience on associations between dependent and independent variables. RESULTS: We extracted data for 2,757 adolescents and adults aged 13 to 62 years, of which 2,062 (74.8%) reported having oral health problems and 925 (33.6%) reported poor quality of oral health. Higher levels of depressive symptoms were significantly associated with higher odds of oral health problems (AOR: 1.07; 95% CI: 1.04-1.10; p<0.001). Higher levels of depressive symptoms (AOR: 1.05; 95% CI: 1.03-1.07; p<0.001), and higher levels of anxiety symptoms (AOR: 1.07; 95% CI: 1.04-1.11; p<0.001) were significantly associated with poor quality of oral health. Resilience significantly moderated the association between anxiety symptoms and oral health problems (AOR = -0.004; 95% CI: -0.006 --0.001; p = 0.002). CONCLUSION: Depression may be a risk indicator for self-reported oral health problems, while depression and anxiety appear to be risk indicators for self-reported poor quality of oral health. These factors could be included as confounders in future studies on oral health problems and quality of oral health among adolescents and adults in Nigeria.

The Etiological and Predictive Association Between ADHD and Cognitive Performance From Childhood to Young Adulthood.

OBJECTIVE: Evidence about the etiology of the predictive associations between a diagnosis of ADHD and cognitive performance over time is scarce. Here, we examine these predictive and etiological patterns using a cross-lagged model design in a sample of 404 participants (74% males) from ADHD and control sibling pairs aged 6 to 17 years at baseline and 12 to 24 years at follow-up. METHODS: Data included IQ, short-term and working memory measures, and response speed and variability from a four-choice reaction-time task. RESULTS: ADHD and IQ predicted each other over time. ADHD at baseline predicted lower working memory performance at follow-up. Stable etiological influences emerged in the association between ADHD and cognitive variables across time. CONCLUSION: Whether early interventions can reduce negative interference with learning at school requires further study.

The Development of Mental Health Difficulties in Young People With and Without Developmental Language Disorder: A Gene-Environment Interplay Study Using Polygenic Scores.

PURPOSE: Young people with developmental language disorder (DLD) have poorer mental health than those without DLD. However, not all young people with DLD are equally affected; some have more mental health difficulties than others. What explains these differences remains unclear. METHOD: Data from a community cohort study, the Avon Longitudinal Study of Parents and Children, were analyzed to investigate genetic and environmental influences on the development of mental health difficulties at five time points from childhood (7 years) to adolescence (16 years) in 6,387 young people (8.7% with DLD). Regression and latent class models were fitted to the data. RESULTS: Polygenic scores (PGSs), indices of genetic risk, for common psychiatric disorders (major depressive disorder, anxiety disorder, and attention deficit hyperactivity disorder) predicted mental health difficulties in both groups (with and without DLD). The presence of DLD, in some instances, amplified mental health difficulties for those with high genetic risk for common psychiatric disorders. Subgroups of children with similar developmental trajectories of mental health difficulties were identified. Young people with DLD were more likely than those without DLD to follow mental health subgroups characterized by consistently high levels of difficulties during development. PGSs, socioeconomic status, and the early home environment distinguished subgroups with low mental health difficulties from those characterized by high levels of difficulties, but these effects did not differ based on DLD status. CONCLUSIONS: These findings suggest that, for the most part, both genetic and environmental risk affect the development of mental health difficulties in a cumulative way for young people with DLD (and those without). Some analysis did, however, suggest that genetic risk for common psychiatric disorders might manifest more strongly in those with DLD compared with those without DLD. SUPPLEMENTAL MATERIAL: https://doi.org/10.23641/asha.22351012.

A multivariate genetic analysis of anxiety sensitivity, environmental sensitivity and reported life events in adolescents.

BACKGROUND: Despite being considered a measure of environmental risk, reported life events are partly heritable. One mechanism that may contribute to this heritability is genetic influences on sensitivity, relating to how individuals process and interpret internal and external signals. The aim of this study was to explore the genetic and environmental overlap between self-reported life events and measures of sensitivity. METHODS: At age 17, 2,939 individuals from the Twins Early Development Study (TEDS) completed measures of anxiety sensitivity (Children's Anxiety Sensitivity Index), environmental sensitivity (Highly Sensitive Child Scale) and reported their experience of 20 recent life events. Using multivariate Cholesky decomposition models, we investigated the shared genetic and environmental influences on the associations between these measures of sensitivity and the number of reported life events, as well as both negative and positive ratings of life events. RESULTS: The majority of the associations between anxiety sensitivity, environmental sensitivity and reported life events were explained by shared genetic influences (60%-75%), with the remainder explained by nonshared environmental influences (25%-40%). Environmental sensitivity showed comparable genetic correlations with both negative and positive ratings of life events (rA  = .21 and .15), anxiety sensitivity only showed a significant genetic correlation with negative ratings of life events (rA  = .33). Approximately 10% of the genetic influences on reported life events were accounted for by influences shared with anxiety sensitivity and environmental sensitivity. CONCLUSION: Differences in how individuals process the contextual aspects of the environment or interpret their own physical and emotional response to environmental stimuli may be one mechanism through which genetic liability influences the subjective experience of life events.

Causal Influences of Same-Sex Attraction on Psychological Distress and Risky Sexual Behaviors: Evidence for Bidirectional Effects.

Although health disparities among same-sex attracted compared to heterosexual individuals are typically explained by minority stress, there is limited evidence for a causal effect. This study investigated whether same-sex attraction was causally associated with psychological distress and risky sexual behavior using sociosexual behavior as a proxy. The sample comprised monozygotic and dizygotic twins and their non-twin siblings (n = 2036, 3780 and 2356, respectively) genotyped and assessed for same-sex attraction, psychological distress (anxiety and depressive symptoms), and risky sexual behavior. Causal influences were investigated with same-sex attraction as the predictor and psychological distress and risky sexual behavior as the outcomes in two separate Mendelian Randomization-Direction of Causation (MRDoC) models using OpenMx in R. The MRDoC model improves on the Mendelian Randomization and Direction of Causation twin models by allowing analyses of variables with similar genetic architectures, incorporating polygenic scores as instrumental variables and specifying pleiotropy and residual covariance. There were significant causal influences flowing from same-sex attraction to psychological distress and risky sexual behavior (standardized coefficients = 0.13 and 0.16; 95% CIs 0.03-0.23 and 0.08-0.25, respectively). Further analyses also demonstrated causal influences flowing from psychological distress and risky sexual behavior toward same-sex attraction. Causal influences from same-sex attraction to psychological distress and risky sexual behavior may reflect minority stress, which reinforces ongoing measures to minimize social disparities. Causal influences flowing in the opposite direction may reflect rejection sensitivity, stigma-inducing outcomes of risky sexual behavior, and recall bias; however, further research is required to specifically investigate these processes.

Bidirectional Causal Associations Between Same-Sex Attraction and Psychological Distress: Testing Moderation and Mediation Effects.

Only one study has examined bidirectional causality between sexual minority status (having same-sex attraction) and psychological distress. We combined twin and genomic data from 8700 to 9700 participants in the UK Twins Early Development Study cohort at ≈21 years to replicate and extend these bidirectional causal effects using separate unidirectional Mendelian Randomization-Direction of Causation models. We further modified these models to separately investigate sex differences, moderation by childhood factors (retrospectively-assessed early-life adversity and prospectively-assessed childhood gender nonconformity), and mediation by victimization. All analyses were carried out in OpenMx in R. Same-sex attraction causally influenced psychological distress with significant reverse causation (beta = 0.19 and 0.17; 95% CIs = 0.09, 0.29 and 0.08, 0.25 respectively) and no significant sex differences. The same-sex attraction → psychological distress causal path was partly mediated by victimization (12.5%) while the reverse causal path was attenuated by higher childhood gender nonconformity (moderation coefficient = -0.09, 95% CI: -0.13, -0.04).

Prevalence and pattern of intimate partner violence during COVID-19 pandemic among Nigerian adults.

OBJECTIVES: Our objectives were to determine the prevalence, pattern, and associated sociodemographic, psychosocial, and COVID-19-related factors associated with intimate partner violence (IPV) during the COVID-19 pandemic among Nigerian adults. METHOD: We conducted an online survey among Nigerian adults (n = 994, aged 18-72 years) who completed the HARK questionnaire, Hospital Anxiety and Depression Scale, Perceived Social Support Scale, and factors associated with the COVID-19 pandemic. Logistic regression was carried out with presence or absence of IPV as the outcome variable. RESULTS: Prevalence of IPV among women was 57.5%, while it was 42.5% among men, during the COVID-19 pandemic. IPV was significantly associated with younger age; having no children; increased threat of income due to COVID-19; anxiety; depression; reduced frequency of accessing COVID-19 updates via TV, radio, and news outlet; self-isolation due to COVID-19 symptoms; and self-reported impact of COVID-19 on recreation. A high monthly income, presence of anxiety and depressive symptoms, threat of COVID-19 to income, and self-reported impact of COVID-19 on recreation increased the odds of experiencing IPV. CONCLUSION: Our findings indicate that the ongoing COVID-19 pandemic has had a significant impact on the experience of IPV among adult Nigerians. The implications of our findings are that both men and women were affected by IPV during the COVID-19 pandemic. Modalities for reducing IPV and its aftermath among this population should include online psychosocial support measures, which may offer anonymity and reduced stigma. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Associations between mental health and HIV status among sexual minority and heterosexual adolescents in Nigeria.

BACKGROUND: We aimed to determine associations between the mental health status of adolescents by self-reported sexual identity; and to determine associations between the mental health status of sexual minority adolescents living with and without HIV. METHODS: This cross-sectional study collected data from Nigerians aged 13-19 years old using an online survey. We collected information on dependent (sexual identity) and independent (presence of depressive symptoms, generalised anxiety disorder, suicidal attempt/ideation, HIV status) study variables. A multivariate regression model determined associations between the dependent and independent variables. A second multivariate regression model was developed to establish associations between HIV status among sexual minority individuals and the dependent variables. All models were adjusted for age, sex assigned at birth and education level. RESULTS: Among 1247 respondents living in Nigeria, 497 (39.9%) identified as sexual minority individuals. Compared with their heterosexual peers, sexual minority adolescents had significantly higher odds of reporting depressive symptoms (adjusted OR (AOR): 5.54; 95% CI: 4.10 to 7.47; p<0.001), high general anxiety (AOR: 3.56; 95% CI: 2.64 to 4.79; p<0.001) and history of suicidal attempt/ideation (AOR: 2.95; 95% CI: 2.20 to 3.94; p<0.001). Sexual minority adolescents living with HIV had significantly higher odds of high general anxiety (AOR: 2.42; 95% CI: 1.21 to 4.84; p=0.013), while those with unknown HIV status had significantly higher odds of depressive symptoms (AOR: 3.82, 95% CI: 2.78 to 5.27; p<0.001), high general anxiety (AOR: 3.09; 95% CI: 2.29 to 4.17; p<0.001) and suicidal attempt/ideation (AOR: 1.65; 95% CI: 1.22 to 2.24; p=0.001). CONCLUSION: Sexual minority adolescents reported poorer mental health status than heterosexual adolescents. Although there was no significant difference in the mental health status of sexual minority adolescents living and not living with HIV, sexual minority adolescents with unknown HIV status reported worse mental health than their HIV-negative peers. Sexual minority adolescents in Nigeria need comprehensive rights-based care that improves access to mental health services, and those with unknown HIV status may need both HIV and mental health screening and care.

Measurement invariance of the strengths and difficulties questionnaire across socioeconomic status and ethnicity from ages 3 to 17 years: A population cohort study.

Mental health inequalities along ethnic and socioeconomic groupings are well documented. The extent to which these observed inequalities are genuine or reflect measurement differences is unclear. In the current study we sought to investigate this in a large population-based sample of children and adolescents in the United Kingdom. The main objective of the study was to establish whether the parent-report Strengths and Difficulties Questionnaire (SDQ) was invariant across ethnicity and socioeconomic status groupings at six time points from 3 to 17 years (maximum N = 17,274). First, we fitted a series of confirmatory factor analysis models to the data and confirmed that the five-factor structure (emotional problems; peer problems; conduct problems; hyperactivity/inattention; and prosocial behaviour) had acceptable fit at ages 5, 7, 11, and 14 years. Next, we tested configural, metric, and scalar invariance at these time points and demonstrated scalar invariance across household income, parent highest education, and ethnicity categories. The five-factor structure did not fit well at ages 3 and 17 years; therefore invariance was not tested at these ages. These findings suggest the parent-report SDQ can be used to measure socioeconomic and ethnic inequalities in mental health from ages 5-14 years but more consideration is required outside these ages.

Psychological Distress, Anxiety, Depression, and Associated Factors Among Nigerian Healthcare Workers During COVID-19 Pandemic: A Cross-Sectional Study.

Objectives: We determined the prevalence of psychological distress, and the associations between sociodemographic factors, anxiety, depression, COVID-19-related experiences, and psychological distress, among nurses and doctors in Nigeria. Methods: The study was a cross-sectional descriptive study, conducted over a month (1st of July-31st of July 2021) among 434 Health Care Workers (HCWs) [225 (51.8%) nurses and 209 (48.2%) doctors] from two tertiary health facilities in southwestern Nigeria. Binary logistic regression was carried out to determine the factors associated with psychological distress (dependent variable), while the independent variables were anxiety, depression, and COVID-19 experience-related factors. Results: The prevalence of moderate and severe psychological distress was 49.1% and 5.8%, respectively. Individuals who had the first degree had significantly lower odds (AOR: 0.43; p = 0.037) of experiencing psychological distress while being a nurse (AOR: 2.03; p = 0.014), higher levels of anxiety (1.28; p < 0.001), and depression (AOR: 1.17; p = 0.005) were associated with significantly higher odds of experiencing moderate to severe levels of psychological distress. Conclusion: There is a high level of psychological distress experienced by these health workers. Hence, they will benefit from strategies to reduce their distress.

Developing an mHealth Intervention to Reduce COVID-19-Associated Psychological Distress Among Health Care Workers in Nigeria: Protocol for a Design and Feasibility Study.

BACKGROUND: Globally, COVID-19-related psychological distress is seriously eroding health care workers' mental health and well-being, especially in low-income countries like Nigeria. The use of mobile health (mHealth) interventions is now increasingly recognized as an innovative approach that may improve mental health and well-being. This project aims to develop an mHealth psychological intervention (mPsyI) to reduce COVID-19-related psychological distress among health care workers in Nigeria. OBJECTIVE: Our objective is to present a study protocol to determine the level of COVID-19-related psychological distress among health care workers in Nigeria; explore health care workers' experience of COVID-19-related psychological distress; develop and pilot test mPsyI to reduce this distress; and assess the feasibility of this intervention (such as usability, engagement, and satisfaction). METHODS: A mixed (quantitative and qualitative) methods approach is used in which health care workers will be recruited from 2 tertiary health care facilities in southwest Nigeria. The study is divided into 4 phases based on the study objectives. Phase 1 involves a quantitative survey to assess the type and levels of psychosocial distress. Phase 2 collects qualitative data on psychosocial distress among health care workers. Phase 3 involves development of the mHealth-based psychological intervention, and phase 4 is a mixed methods study to assess the feasibility and acceptability of the intervention. RESULTS: This study was funded in November 2020 by the Global Effort on COVID-19 Health Research, and collection of preliminary baseline data started in July 2021. CONCLUSIONS: This is the first study to report the development of an mHealth-based intervention to reduce COVID-19-related psychological distress among health care workers in Nigeria. Using a mixed methods design in this study can potentially facilitate the adaptation of an evidence-based treatment method that is culturally sensitive and cost-effective for the management of COVID-19-related psychological distress among health care workers in Nigeria. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): DERR1-10.2196/36174.

Investigating the causal risk factors for self-harm by integrating Mendelian randomisation within twin modelling.

Previous genetically informed studies have uncovered likely causal relationships between mental health problems and self-harm but resulting causal estimates may be biased due to unmediated pleiotropy. By fitting Mendelian Randomization - Direction of Causation (MR-DoC) models that explicitly model pleiotropy, we investigated the effect of four quantitatively measured mental health problems - major depressive disorder (MDD), schizophrenia, attention-deficit hyperactivity disorder (ADHD), and insomnia, on non-suicidal self-harm (NSSH) and suicidal self-harm (SSH), separately. We used data of 12,723 twins (56.6% females) in the Twins Early Development Study. Besides substantial pleiotropy, we found effects from child-rated depressive symptoms to both NSSH (ß = 0.194, 95% CIs: 0.131, 0.257) and SSH (ß = 0.210, 95% CIs: 0.125, 0.295). Similarly, effects flowed from parent-rated depressive symptoms to NSSH (ß = 0.092, 95% CIs: 0.004, 0.181) and SSH (ß = 0.165, 95% CIs: 0.051, 0.281). We did not find evidence of aetiological difference between NSSH and SSH.