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Objective While psychotic experiences ( PEs) are known to be associated with a range of mental and general medical disorders, little is known about the association between PEs and measures of disability. We aimed to investigate this question using the World Mental Health surveys. Method Lifetime occurrences of six types of PEs were assessed along with 21 mental disorders and 14 general medical conditions. Disability was assessed with a modified version of the WHO Disability Assessment Schedule. Descriptive statistics and logistic regression models were used to investigate the association between PEs and high disability scores (top quartile) with various adjustments. Results Respondents with PEs were more likely to have top quartile scores on global disability than respondents without PEs (19.1% vs. 7.5%; χ2 = 190.1, P < 0.001) as well as greater likelihood of cognitive, social, and role impairment. Relationships persisted in each adjusted model. A significant dose-response relationship was also found for the PE type measures with most of these outcomes. Conclusions Psychotic experiences are associated with disability measures with a dose-response relationship. These results are consistent with the view that PEs are associated with disability regardless of the presence of comorbid mental or general medical disorders. [ABSTRACT FROM AUTHOR]

Objective To investigate whether sociodemographic factors were associated with continuing tobacco use in a nationwide Nigerian sample. Method The World Mental Health Survey Schedule was used to interview 6752 Community dwelling participants 18 years and over, selected in a complex multistage sampling from the six geopolitical zones of Nigeria. Ever and current smokers were identified with their sociodemographic characteristics. Results About 17% (1137/6752) of the participants were ever smokers, 24.8% of whom were current smokers. Participants who completed primary school, had some College education, were never married, or students were more likely to continue using smoke once they commenced its use. Being in the older age group or having had graduate college education was associated with much less likelihood of continuing to use tobacco among ever smokers. Conclusion In general, tobacco smoking rate in Nigeria is lower compared to most developed countries. Younger participants, having some education, those who were never married were more likely to continue tobacco smoking. Determinants of factors associated with continuing tobacco use should be adequately investigated to permit appropriate interventions. [ABSTRACT FROM AUTHOR]

Uwakwe R, Oladeji BD, Gureje O. Traumatic events and suicidal behaviour in the Nigerian Survey of Mental Health and Well-Being. Objective: Not much is known about the role of different traumatic events in predicting suicidal outcomes. We investigated the association of specific traumatic events with different suicidal outcomes. Method: Data are from the Nigerian Survey of Mental Health and Well-Being, a multistage probability household survey of persons aged 18 years and over. Information on traumatic events and suicidal behaviours (ideation, plan and attempts) was collected in face-to-face interviews using the Composite International Diagnostic Interview (CIDI.3) from a subsample of the respondents ( N = 2143). Results: At least one traumatic event was reported by 63% of the sample. Traumatic events were more likely to have been experienced by individuals with different suicidal outcomes, with a dose-response relationship between the number of traumatic events and suicide ideation. The risks of suicidal ideation were elevated among persons with a history of combat experience (OR 6.3 95% CI 1.8-21.8) and those with exposure to war (OR 4.2; 95% CI 1.6-10.6), while that of suicidal attempt was increased among persons with experience of interpersonal violence (OR 4.3; 95% CI 1.4-13.0). Conclusion: Traumatic events are common in the general population. This report highlights the role of traumatic events (especially those related to violence) in predicting suicidal behaviour. [ABSTRACT FROM AUTHOR]

Breslau J, Miller E, Jin R, Sampson NA, Alonso J, Andrade LH, Bromet EJ, de Girolamo G, Demyttenaere K, Fayyad J, Fukao A, Gălăon M, Gureje O, He Y, Hinkov HR, Hu C, Kovess-Masfety V, Matschinger H, Medina-Mora ME, Ormel J, Posada-Villa J, Sagar R, Scott KM, Kessler RC. A multinational study of mental disorders, marriage, and divorce. Objective: Estimate predictive associations of mental disorders with marriage and divorce in a cross-national sample. Method: Population surveys of mental disorders included assessment of age at first marriage in 19 countries ( n = 46 128) and age at first divorce in a subset of 12 countries ( n = 30 729). Associations between mental disorders and subsequent marriage and divorce were estimated in discrete time survival models. Results: Fourteen of 18 premarital mental disorders are associated with lower likelihood of ever marrying (odds ratios ranging from 0.6 to 0.9), but these associations vary across ages of marriage. Associations between premarital mental disorders and marriage are generally null for early marriage (age 17 or younger), but negative associations come to predominate at later ages. All 18 mental disorders are positively associated with divorce (odds ratios ranging from 1.2 to 1.8). Three disorders, specific phobia, major depression, and alcohol abuse, are associated with the largest population attributable risk proportions for both marriage and divorce. Conclusion: This evidence adds to research demonstrating adverse effects of mental disorders on life course altering events across a diverse range of socioeconomic and cultural settings. These effects should be included in considerations of public health investments in preventing and treating mental disorders. [ABSTRACT FROM AUTHOR]

Objective: We assessed the prevalence of perceived stigma among persons with mental disorders and chronic physical conditions in an international study. Method: Perceived stigma (reporting health-related embarrassment and discrimination) was assessed among adults reporting significant disability. Mental disorders were assessed with Composite International Diagnostic Interview (CIDI) 3.0. Chronic conditions were ascertained by self-report. Household-residing adults (80 737) participated in 17 population surveys in 16 countries. Results: Perceived stigma was present in 13.5% (22.1% in developing and 11.7% in developed countries). Suffering from a depressive or an anxiety disorder (vs. no mental disorder) was associated with about a twofold increase in the likelihood of stigma, while comorbid depression and anxiety was even more strongly associated (OR 3.4, 95%CI 2.7–4.2). Chronic physical conditions showed a much lower association. Conclusion: Perceived stigma is frequent and strongly associated with mental disorders worldwide. Efforts to alleviate stigma among individuals with comorbid depression and anxiety are needed. [ABSTRACT FROM AUTHOR]

To determine correlates and outcome of cognitive impairment without dementia in community-dwelling elderly Nigerians. A total of 2487 community residents aged 65 years and over were screened using the Community Screening Interview for Dementia. A subset of 423 individuals received diagnostic clinical evaluation. Participants were diagnosed normal, demented, or cognitive impairment no dementia (CIND). Follow-up clinical diagnostic evaluation was conducted on CIND subjects approximately 2 years later. One hundred and fifty-two persons were diagnosed CIND. Eighty-seven CIND subjects were seen at follow-up assessment, 14 (16.1%) had converted to dementia, 22 (25.3%) reverted to normal, and 51 (58.6%) remained CIND. No baseline factors predicted later development of dementia amongst the CIND subjects. CIND subjects who reverted to normal tended to be male and to have higher baseline cognitive scores. Apolipoprotein status was not related to diagnosis at follow-up. CIND is common in community-dwelling Nigerians. Although the outcome is variable, it does represent a high-risk group for subsequent dementia. [ABSTRACT FROM AUTHOR]

We determined the prevalence of dementia in a cohort of 2494 elderly Nigerians residents in Idikan Community, Ibadan, Nigeria. We utilized the Community Screening Instrument for Dementia to select subjects for clinical assessment in the second stage. The findings were compared with those of 2212 African Americans living in Indianapolis, studied simultaneously using similar methodology. The overall age-adjusted prevalence rates of dementia and Alzheimer’s disease in Ibadan were 2.29% and 1.41%, respectively. These rates were much lower than the respective values of 8.24% and 6.24% obtained for African Americans. In Ibadan, Alzheimer’s disease accounted for 64.3% of the cases, with old age and female gender being the significant risk factors, whilst ‘living with others’ appeared to be protective (P < 0.05). Amongst African Americans, on the other hand, old age, rural living below the age of 19 years, low educational attainment and family history of dementia were the risk factors. There was a lack of association between Alzheimer’s disease and possession of the apolipoprotein E ε4 allele in the Nigerian sample, unlike the finding in African Americans, where significant association was shown. In addition, the frequencies of the vascular risk factors investigated were lower in Nigerians. Our results showed lower prevalence of dementia and Alzheimer’s disease in Nigerians, compared with African Americans. There was no association between Alzheimer’s disease and apolipoprotein E (ε4 allele) in the former. The differences in the frequencies of vascular risk factors between Nigerian subjects and African Americans would suggest involvement of environmental factors in disease process. [ABSTRACT FROM AUTHOR]

Aims: Likelihood of alcohol dependence (AD) is increased among people who transition to greater levels of alcohol involvement at a younger age. Indicated interventions delivered early may be effective in reducing risk, but could be costly. One way to increase cost-effectiveness would be to develop a prediction model that targeted interventions to the subset of youth with early alcohol use who are at highest risk of subsequent AD., Design: A prediction model was developed for DSM-IV AD onset by age 25 years using an ensemble machine-learning algorithm known as 'Super Learner'. Shapley additive explanations (SHAP) assessed variable importance., Setting and Participants: Respondents reporting early onset of regular alcohol use (i.e. by 17 years of age) who were aged 25 years or older at interview from 14 representative community surveys conducted in 13 countries as part of WHO's World Mental Health Surveys., Measurements: The primary outcome to be predicted was onset of life-time DSM-IV AD by age 25 as measured using the Composite International Diagnostic Interview, a fully structured diagnostic interview., Findings: AD prevalence by age 25 was 5.1% among the 10 687 individuals who reported drinking alcohol regularly by age 17. The prediction model achieved an external area under the curve [0.78; 95% confidence interval (CI) = 0.74-0.81] higher than any individual candidate risk model (0.73-0.77) and an area under the precision-recall curve of 0.22. Overall calibration was good [integrated calibration index (ICI) = 1.05%]; however, miscalibration was observed at the extreme ends of the distribution of predicted probabilities. Interventions provided to the 20% of people with highest risk would identify 49% of AD cases and require treating four people without AD to reach one with AD. Important predictors of increased risk included younger onset of alcohol use, males, higher cohort alcohol use and more mental disorders., Conclusions: A risk algorithm can be created using data collected at the onset of regular alcohol use to target youth at highest risk of alcohol dependence by early adulthood. Important considerations remain for advancing the development and practical implementation of such models., (© 2023 The Authors. Addiction published by John Wiley & Sons Ltd on behalf of Society for the Study of Addiction.)

Aims: To examine cross-national patterns of 12-month substance use disorder (SUD) treatment and minimally adequate treatment (MAT), and associations with mental disorder comorbidity., Design: Cross-sectional, representative household surveys., Setting: Twenty-seven surveys from 25 countries of the WHO World Mental Health Survey Initiative., Participants: A total of 2446 people with past-year DSM-IV SUD diagnoses (alcohol or illicit drug abuse and dependence)., Measurements: Outcomes were SUD treatment, defined as having either received professional treatment or attended a self-help group for substance-related problems in the past 12 months, and MAT, defined as having either four or more SUD treatment visits to a health-care professional, six or more visits to a non-health-care professional or being in ongoing treatment at the time of interview. Covariates were mental disorder comorbidity and several socio-economic characteristics. Pooled estimates reflect country sample sizes rather than population sizes., Findings: Of respondents with past-year SUD, 11.0% [standard error (SE) = 0.8] received past 12-month SUD treatment. SUD treatment was more common among people with comorbid mental disorders than with pure SUDs (18.1%, SE = 1.6 versus 6.8%, SE = 0.7), as was MAT (84.0%, SE = 2.5 versus 68.3%, SE = 3.8) and treatment by health-care professionals (88.9%, SE = 1.9 versus 78.8%, SE = 3.0) among treated SUD cases. Adjusting for socio-economic characteristics, mental disorder comorbidity doubled the odds of SUD treatment [odds ratio (OR) = 2.34; 95% confidence interval (CI) = 1.71-3.20], MAT among SUD cases (OR = 2.75; 95% CI = 1.90-3.97) and MAT among treated cases (OR = 2.48; 95% CI = 1.23-5.02). Patterns were similar within country income groups, although the proportions receiving SUD treatment and MAT were higher in high- than low-/middle-income countries., Conclusions: Few people with past-year substance use disorders receive adequate 12-month substance use disorder treatment, even when comorbid with a mental disorder. This is largely due to the low proportion of people receiving any substance use disorder treatment, as the proportion of patients whose treatment is at least minimally adequate is high., (© 2019 Society for the Study of Addiction.)

Background and Aims: The World Health Organization's (WHO's) proposed International Classification of Diseases, 11th edition (ICD-11) includes several major revisions to substance use disorder (SUD) diagnoses. It is essential to ensure the consistency of within-subject diagnostic findings throughout countries, languages and cultures. To date, agreement analyses between different SUD diagnostic systems have largely been based in high-income countries and clinical samples rather than general population samples. We aimed to evaluate the prevalence of, and concordance between diagnoses using the ICD-11, The WHO's ICD 10th edition (ICD-10) and the Diagnostic and Statistical Manual of Mental Disorders, 4th and 5th editions (DSM-IV, DSM-5); the prevalence of disaggregated ICD-10 and ICD-11 symptoms; and variation in clinical features across diagnostic groups., Design: Cross-sectional household surveys., Setting: Representative surveys of the general population in 10 countries (Argentina, Australia, Brazil, Colombia, Iraq, Northern Ireland, Poland, Portugal, Romania and Spain) of the World Mental Health Survey Initiative., Participants: Questions about SUDs were asked of 12 182 regular alcohol users and 1788 cannabis users., Measurements: Each survey used the World Mental Health Survey Initiative version of the WHO Composite International Diagnostic Interview version 3.0 (WMH-CIDI)., Findings: Among regular alcohol users, prevalence (95% confidence interval) of life-time ICD-11 alcohol harmful use and dependence were 21.6% (20.5-22.6%) and 7.0% (6.4-7.7%), respectively. Among cannabis users, 9.3% (7.4-11.1%) met criteria for ICD-11 harmful use and 3.2% (2.3-4.0%) for dependence. For both substances, all comparisons of ICD-11 with ICD-10 and DSM-IV showed excellent concordance (all κ ≥ 0.9). Concordance between ICD-11 and DSM-5 ranged from good (for SUD and comparisons of dependence and severe SUD) to poor (for comparisons of harmful use and mild SUD). Very low endorsement rates were observed for new ICD-11 feature for harmful use ('harm to others'). Minimal variation in clinical features was observed across diagnostic systems., Conclusions: The World Health Organization's proposed International Classification of Diseases, 11th edition (ICD-11) classifications for substance use disorder diagnoses are highly consistent with the ICD 10th edition and the Diagnostic and Statistical Manual of Mental Disorders, 4th edition (DSM-IV). Concordance between ICD-11 and the DSM 5th edition (DSM-5) varies, due largely to low levels of agreement for the ICD harmful use and DSM-5 mild use disorder. Diagnostic validity of self-reported 'harm to others' is questionable., (© 2018 Society for the Study of Addiction.)

Background and Aims: Prior research has found bidirectional associations between psychotic experiences (PEs) and selected substance use disorders. We aimed to extend this research by examining the bidirectional association between PEs and various types of substance use (SU) and substance use disorders (SUDs), and the influence of antecedent mental disorders on these associations., Design, Setting, Participants and Measurements: We used data from the World Health Organization World Mental Health surveys. A total of 30 902 adult respondents across 18 countries were assessed for (a) six types of life-time PEs, (b) a range of types of SU and DSM-IV SUDs and (c) mental disorders using the Composite International Diagnostic Interview. Discrete-time survival analyses based on retrospective age-at-onset reports examined the bidirectional associations between PEs and SU/SUDs controlling for antecedent mental disorders., Findings: After adjusting for demographics, comorbid SU/SUDs and antecedent mental disorders, those with prior alcohol use disorders [odds ratio (OR) = 1.6, 95% confidence interval (CI) = 1.2-2.0], extra-medical prescription drug use (OR = 1.5, 95% CI = 1.1-1.9), alcohol use (OR = 1.4, 95% CI = 1.1-1.7) and tobacco use (OR = 1.3, 95% CI = 1.0-1.8) had increased odds of subsequent first onset of PEs. In contrast, those with temporally prior PEs had increased odds of subsequent onset of tobacco use (OR = 1.5, 95% CI = 1.2-1.9), alcohol use (OR = 1.3, 95% CI = 1.1-1.6) or cannabis use (OR = 1.3, 95% CI = 1.0-1.5) as well as of all substance use disorders (ORs ranged between 1.4 and 1.5). There was a dose response relationship between both count and frequency of PEs and increased subsequent odds of selected SU/SUDs., Conclusions: Associations between psychotic experiences (PEs) and substance use/substance use disorders (SU/SUDs) are often bidirectional, but not all types of SU/SUDs are associated with PEs. These findings suggest that it is important to be aware of the presence of PEs within those with SUDs or at risk of SUDs, given the plausibility that they may each impact upon the other., (© 2017 Society for the Study of Addiction.)

Aim: To assess the feasibility and effectiveness of depot antipsychotic (flupenthixol decanoate) combined with an assertive monitoring programme (AMP) in first-episode schizophrenia., Methods: This was a prospective, non-comparative, longitudinal study conducted over 12 months assessing patient acceptance, adherence, outcome in domains of psychopathology, functionality and quality of life, and tolerability., Results: Of 207 participants, 149 (72%) completed 12 months of treatment. Acceptance of and adherence to depot was good. Treatment response was achieved by 170 (82%) participants and remission by 124 (60%). Thirty-three (19%) responders relapsed and 10 (5%) participants met a priori criteria for treatment resistance. Treatment was generally well tolerated., Conclusions: Combination of depot antipsychotic with an AMP may be an effective and safe intervention in early phases of schizophrenia, and may be particularly suitable for resource-constrained settings., (© 2014 Wiley Publishing Asia Pty Ltd.)

Background: Previous single country research has raised concerns that: (1) the DSM-IV diagnosis of alcohol abuse (AA) is met primarily through the hazardous use criterion related to drinking and driving and (2) that the hazardous use and social consequences AA criteria primarily reflect varying socioeconomic and cultural factors rather than psychiatric disorder., Methods: Using representative cross-national data from the 21 countries in the World Mental Health surveys, adults meeting DSM-IV lifetime criteria for AA but not dependence from 10 developed (n=46,071) and 11 developing (n=49,761) countries were assessed as meeting AA with the hazardous use or the social consequences criteria., Results: Between 29.3% (developed) and 16.2% (developing) of respondents with AA met only the hazardous use criterion. AA cases with and without hazardous use were similar in age-of-onset, course, predictors, and psychopathological consequences in both developed and developing countries., Discussion and Conclusions: Despite some associations of the AA criteria with socioeconomic factors, the hazardous use and social consequences criteria were significantly associated with psychiatric predictors and sequelae. The findings indicate that these criteria reflect psychiatric disorder and are appropriate for inclusion as DSM-5 Alcohol Use Disorder criteria., Scientific Significance: These findings support a psychiatric rather than a sociocultural view of the hazardous use and social consequences symptoms and provide evidence that they are appropriate diagnostic criteria cross-nationally with utility in a wide range of socioeconomic environments. This suggests consideration for their adoption by ICD-11. Further research is needed on the implications of these results for prevention and treatment., (Copyright © American Academy of Addiction Psychiatry.)

Objectives: To investigate the relationship between hypertension and dementia incidence in community-dwelling elderly Yoruba (aged 70 years and above) because of sparse information on dementia and its risk factors in developing countries., Materials and Methods: Community-based, prospective study of consenting elderly Yoruba using two-stage design. Blood pressure was measured during the baseline evaluation at 2001 and hypertension was defined as BP ≥ 140/90 mmHg. Diagnosis of dementia and normal cognition was by consensus using standard criteria. Non-demented subjects from the 2001 evaluation wave were re-evaluated during the 2004 and 2007 waves for dementia. Logistic regression was used to examine the association of baseline hypertension and incident dementia, after adjusting for age, gender, education, and histories of stroke and smoking. P-values <0.05 were considered significant., Results: During the 6-year follow-up, 120 individuals developed dementia, while 1633 remained non-demented. The frequency of hypertension in the demented group was significantly higher than in the non-demented (70.0% vs 60.2%, P = 0.034). Baseline hypertension was a significant risk factor for dementia (OR = 1.52; 95% CI 1.01-2.30). Higher systolic, diastolic or pulse pressure was associated with increased risk (P < 0.05). Participants with diastolic BP ≥ 90 mmHg were at a significantly greater risk than those with readings below 70 mmHg (OR = 1.65; 95% CI 1.01-2.69)., Conclusions: Hypertension was associated with increased risk of dementia in elderly Yoruba and its appropriate treatment may lower the risk., (© 2011 John Wiley & Sons A/S.)

Current psychiatric classificatory systems commonly provide similar criteria for the identification of disorders relating to the use of alcohol and other drugs. However, since cultural views of substance use disorders are influenced by prevailing norms in the society, it is unlikely that a given culture will have identical threshold for the identification of disorders relating to the use of alcohol, commonly socially approved, and those relating to the use of other mood-altering substances, commonly socially disapproved. Using data derived from the WHO nine-country Cross-Cultural Applicability Research (CAR) study, we studied the cultural views on the use and abuse of alcohol and other drugs. Our observations suggest that, with a few notable exceptions, any use of addictive substances other than alcohol is commonly considered socially aberrant. Most cultures set a much lower threshold for the identification of disorders relating to these substances than they do for alcohol-related ones.