FACULTY OF CLINICAL SCIENCES
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Item Patterns and correlates of patient-reported helpfulness of treatment for common mental and substance use disorders in the WHO World Mental Health Surveys(Elsevier Srl, 2022) Kessler, R. C.; Kazdin, A. E.; Aguilar-Gaxiola, S.; Al-Hamzawi, A.; Alonso, J.; Altwaijri, Y. A.; Andrade, L. H.; Benjet, C.; Bharat, C.; Borges, G.; Bruffaerts, R.; Bunting, B.; Caldas de Almeida, J. M.; Cardoso, G.; Chiu, W. T.; Cía, A.; Ciutan, M.; Degenhardt, L.; de Girolamo, G.; de Jonge, P.; de Vries, Y. A.; Florescu, S.; Gureje, O.; Haro, J. M.; Harris, M. G.,; Hu, C.; Karam, A. N.; Karam, E. G.; Karam, G.; Kawakami, N.; Kiejna, A.; Kovess-Masfety, V.; Lee, S.; Makanjuola, V.; McGrath, J. J.; Medina-Mora, M. E.; Moskalewicz, J.; Navarro-Mateu, F.; Nierenberg, A. A.; Nishi, D.; Ojagbemi, A.; Oladeji, B. D.; O’Neill, S.; Posada-Villa, J.; Puac-Polanco, V.; Rapsey, C.; Ruscio, A. M.; Sampson, N. A.; Scott, K. M.; Slade, T.; Stagnaro, J. C.; Stein, D. J.; Tachimori, H.; ten Have, M.; Torres, Y.; Viana, M. C.; Vigo, D. V.; Williams, D. R.; Wojtyniak, B.; Xavier, M.; Zarkov, Z.; Ziobrowski, H. N.; WHO WMH survey collaboratorsPatient-reported helpfulness of treatment is an important indicator of quality in patient-centered care. We examined its pathways and predictors among respondents to household surveys who reported ever receiving treatment for major depression, generalized anxiety disorder, social phobia, specific phobia, post-traumatic stress disorder, bipolar disorder, or alcohol use disorder. Data came from 30 community epidemiological surveys –17 in high-income countries (HICs) and 13 in low- and middle-income countries (LMICs) – carried out as part of the World Health Organization (WHO)’s World Mental Health (WMH) Surveys. Respondents were asked whether treatment of each disorder was ever helpful and, if so, the number of professionals seen before receiving helpful treatment. Across all surveys and diagnostic categories, 26.1% of patients (N=10,035) reported being helped by the very first professional they saw. Persisting to a second professional after a first unhelpful treatment brought the cumulative probability of receiving helpful treatment to 51.2%. If patients persisted with up through eight professionals, the cumulative probability rose to 90.6%. However, only an estimated 22.8% of patients would have persisted in seeing these many professionals after repeatedly receiving treatments they considered not helpful. Although the proportion of individuals with disorders who sought treatment was higher and they were more persistent in HICs than LMICs, proportional helpfulness among treated cases was no different between HICs and LMICs. A wide range of predictors of perceived treatment helpfulness were found, some of them consistent across diagnostic categories and others unique to specific disorders. These results provide novel information about patient evaluations of treatment across diagnoses and countries varying in income level, and suggest that a critical issue in improving the quality of care for mental disorders should be fostering persistence in professional help-seeking if earlier treatments are not helpful.Item Effect of a stepped-care intervention delivered by lay health workers on major depressive disorder among primary care patients in Nigeria (STEPCARE): a cluster randomised controlled trial(Elsevier Ltd., 2019) Gureje, O.; Oladeji, B. D.; Montgomery, A. A.; Bello, T.; Kola, L.; Ojagbemi, A.; Chisolm, D.; Araya, R.Background Little is known about how to scale up care for depression in settings where non-physician lay workers constitute the bulk of frontline providers. We aimed to compare a stepped-care intervention package for depression with usual care enhanced by use of the WHO Mental Health Gap Action Programme intervention guide (mhGAP-IG). Methods We did a cluster-randomised trial in primary care clinics in Ibadan, Nigeria. Eligible clinics were those with adequate staffing to provide various 24-h clinical services and with regular physician supervision. Clinics (clusters), anonymised and stratified by local government area, were randomly allocated (1:1) with a computer-generated random number sequence to one of two groups: an intervention group in which patients received a stepped-care intervention (eight sessions of individual problem-solving therapy, with an extra two to four sessions if needed) plus enhanced usual care, and a control group in which patients received enhanced usual care only. Patients from enrolled clinics could participate if they were aged 18 years or older, not pregnant, and had moderate to severe depression (scoring ≥11 on the nine-item patient health questionnaire [PHQ-9]). The primary outcome was the proportion of patients with remission of depression at 12 months (a score of ≤6 on the PHQ-9, with assessors masked to group allocation) in the intention-to-treat population. This trial is registered with the International Standard Randomised Controlled Trials Number registry (ISRCTN46754188) and is completed. Findings 35 of 97 clinics approached were eligible and agreed to participate, of which 18 were allocated to the intervention group and 17 to the control group. 1178 patients (631 [54%] in the intervention group and 547 [46%] in the control group) were recruited between Dec 2, 2013, and June 29, 2015, among whom 976 (83%) were female and baseline mean PHQ-9 score was 13·7 (SD 2·6). Of the 562 (89%) patients in the intervention group and 473 (86%) in the control group who completed 12-month follow-up, similar proportions in each group had remission of depression (425 [76%] in the intervention group vs 366 [77%] in the control group; adjusted odds ratio 1∙0 [95% CI 0·70–1·40]). At 12 months, 17 (3%) deaths, one (<1%) psychotic illness, and one (<1%) case of bipolar disorder in the intervention group, and 16 deaths (3%) and one (<1%) case of bipolar disorder in the control group were recorded. No adverse events were judged to be related to the study procedures. Interpretation For patients with moderate to severe depression receiving care from non-physician primary health-care workers in Nigeria, a stepped-care, problem-solving intervention combined with enhanced usual care is similarly effective to enhanced usual care alone. Enhancing usual care with mhGAP-IG might provide simple and affordable approach to scaling up depression care in sub-Saharan Africa.Item Suicidal behaviour in old age - results from the Ibadan study of ageing(2013) Ojagbemi, A.; Oladeji, B.; Abiona, T.; Gureje, O.Background: An important reason for the high risk of suicide in the elderly is the determination with which they act out their suicidal thoughts. Early identification of suicidal behaviours in the elderly is therefore important for suicide prevention efforts in this population. Method: Data are from the Ibadan Study of Ageing (ISA), a household multi-stage probability sample of 2149 Yoruba Nigerians aged 65 years or older conducted between 2003 and 2004. We used the third version of the World Health Organization (WHO) Composite International Diagnostic Interview (CIDI) to explore suicidal experiences and behaviours. In this report, only those experiences or behaviours reported to have occurred after the age of 65 years are the focus of analysis. Derived weights were applied to the data in accordance with the study design and associations were explored using logistic regression. The results are presented as odds ratios (ORs) with 95% confidence intervals. Result: In all, 4.0% (95% C.I= 3.1-4.2) of the subjects had suicidal ideation occurring after the age of 65 years, while 0.7% (95% C.I=0.4-1.3) and 0.2% (95% C.I= 0.1-0.4) reported suicidal plans and attempts, respectively. There was a significantly elevated likelihood of suicidal ideation among persons who had experienced spousal separation through death or divorce (O.R=4.9., 95% C.I= 1.5-15) or who were residing in rural settings (O.R=2.5, 95% C.I=1.3-4.8). Conclusion: Suicidal ideation is common among the elderly. About 20% and 6% of those with ideation proceed to plans and attempts, respectively. Circumstances of social isolation and exclusion are important correlates of suicidal behaviour in the elderly.Item Spontaneous and emergent extrapyramidal syndromes in Black Africans with first-episode schizophrenia and first exposure to antipsychotics(Taylor & Francis, 2021) Ojagbemi, A.; Chiliza, B.; Bello, T.; Esan, O. B.; Asmal, L.; Emsley, R.; Gureje, O.Background: Persons of African ancestry are thought to carry a higher risk for extrapyramidal syndromes (EPS) in schizophrenia. Aim: We investigated the phenomenon of spontaneous and treatment-emergent EPS in a sample comprising Xhosa (South Africa) and Yoruba (Nigeria) Africans with first-episode schizophrenia and first exposure to antipsychotics. Methods: The Extrapyramidal Symptom Rating Scale (ESRS) and a variety of validated tools were used for the assessment of participants before, and two-weekly after treatment with low dose flupenthixol decanoate. Participants were followed up for 12 months. Association of EPS with clinical characteristics was investigated using Pearson’s correlation and linear regression analyses. Results: Of 88 participants at baseline, 16 (18.1%) had at least one definite EPS prior to antipsychotic exposure and 34 (38.6%) had treatment-emergent EPS. While spontaneous Parkinsonism was associated with negative symptoms (r¼0.2, p¼0.043; b¼0.6, p¼0.043), treatment-emergent EPS demonstrated non-significant correlations with clinical characteristics. Apart from dyskinesia, the frequency of treatment-emergent EPS decreased over 12 months observation. Conclusion: These findings support the hypothesis suggesting that spontaneously occurring Parkinsonism in schizophrenia may be the motor spectrum of negative symptomatology. Future studies of this relationship may lead to early identification of patients who may be more sensitive to EPS.Item The expression of neurological soft signs in two African populations with first-episode schizophrenia(SAGE Publications, 2018) Ojagbemi, A.; Chiliza, B.; Bello, T.; Asmal, L.; Esan, O.B.; Emsley, R.; Gureje, O.Information about patterns of expression of neurological soft signs (NSS) in schizophrenia among individuals belonging to the same genetic ancestry may provide new insight for the understanding of the disease’s genetic functions. This study aimed to investigate whether patterns of NSS expression in first episode schizophrenia are com parable in populations with dissimilar genetic ancestry. A sample of 207 patients with first episode schizophrenia were examined using the Neurological Evaluation Scale before they were exposed to anti-psychotics. They were allocated to two African ancestry groups: Black (81 Yoruba Nigerians, and 18 Xhosa South Africans), and non-Black (98 Colored, and 10 White South Africans). Assessments were carried out using validated measures of clinical characteristics of schizophrenia. We determined the frequency, severity, factor structure, and association of NSS with clinical characteristics. Factor derived categories were compared using the Pearson’s (r) and Tucker’s congruence methods. The associations between factor derived categories and clinical characteristics of schizophrenia were determined using Pearson’s correlations and multiple regression analyses. Neurological soft signs were more frequent and more severe in the Black African ancestry group. Also, the factor structure and presentation of NSS in the two ancestry groups were significantly different. Neurological soft signs, especially motor sequencing and cognitive-perceptual abnormalities, were independently associated with disorganization psychopathologies in all the participant groups. Differences in the profile of NSS in Black compared with non-Black African ancestry patients with first episode schizophrenia may suggest differing patterns of expression of NSS in schizophrenia according to genetic ancestry.Item Neurological Soft Signs, Spontaneous and Treatment Emergent Extrapyramidal Syndromes in Black Africans With First Episode Schizophrenia(Frontiers Media S.A., 2018) Ojagbemi, A.; Chiliza, B.; Bello, T.; Asmal, L.; Esan, O.B.; Emsley, R.; Gureje, O.Background: Very little is known about the relationship between spontaneous and treatment-induced motor syndromes in Africans with first episode schizophrenia. Objective: We investigated the association between spontaneous NSS and EPS, with treatment-induced EPS in a homogenous sample of Black Africans with first episode schizophrenia. Methods: We examined Xhosa (South Africa) and Yoruba (Nigeria) patients, using the Neurological Evaluation Scale and extrapyramidal symptoms scale before and at 3 months after exposure to low dose flupenthixol decanoate. Pearson’s correlations and Linear regression models, controlling for duration of untreated psychosis (D.U.P) and premorbid adjustments, were used in examining associations. Results: Among 99 participants in the baseline sample, 91 (91.8%) and 20 (20.2%) had at least one definite NSS and EPS, respectively, before exposure to antipsychotics. Treatment-induced EPS were recorded in 34 (38.6%). Spontaneous EPS was associated with treatment-emergent Akathisia in participants with a longer D.U.P (r = 0.75, β = 0.70, p=0.008). This association was specific for Parkinsonism (r =0.75, β=0.85, p=0.008) and dyskinesia (r = 0.75, β = 1.70, p = 0.008). Conclusion: Similar to previous findings for tardive dyskinesia in studies implementing longer-term follow-up, spontaneous EPS may also predict short-term antipsychotic induced EPS such as akathisia. These results may be important for early identification of patients at risk of treatment-induced Akathisia-linked psychomotor agitation in first episode schizophrenia.Item Combining depot antipsychotic with an assertive monitoring programme for treating first-episode schizophrenia in a resource- constrained setting(John Wiley & Sons Australia, Ltd, 2016) Chiliza, B.; Ojagbemi, A.; Esan, O.B.; Asmal, L.; Oosthuizen, P.; Kidd, M.; Gureje, O.; Emsley, R.Aim: To assess the feasibility and effectiveness of depot antipsychotic (flupentixol 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 and10(5%) participants met a priori criteria for treatment resistance. Treatment was generally well tolerated. Conclusions: Combination of depot antipsychotic with an AMP maybe an effective and safe intervention linearly phase of schizophrenia, and may be particularly suitable for resource constrained settings.Item Motor sequencing abnormalities are the trait marking neurological soft signs of schizophrenia(Elsevier B.V., 2015) Ojagbemi, A.; Esan, O.B.; Emsley, R.; Gureje, O.We describe the profile of NSS across the one-year course of schizophrenia in 84 Nigerian first-episode patients. They were assessed at baseline and 3 monthly for 12 months using the Neurological Evaluation Scale and the Positive and Negative Syndrome Scale (PANSS), and treated with flupenthixoldecanoate. The patternofNSStotalandsub-categoryscoresobtainedfromrepeatedmeasurementswereinvestigatedfor responders (≥50% reduction of baseline PANSS scores) and non-responders using the method of repeated measures analysis of variance. Trait-like features of NSS categories were quantified using intra class correlation coefficients (ICCs). NSS were present in 96.4% of the patients at baseline (mean 21.5±11.1). The motor-sequencing sub-category was found unrelated to changes in schizophrenia psycho pathology with treatment (positive, r=0.19, p=0.136., negative, r=0.12, p=0.350; disorganization, r=0.16, p=0.245; overall, r=0.20, p=0.112). Regardless of decrements in psychopathology, motor-sequencing scores remained relatively unchanged across the course of the disease (main effects: responders’ F=2.44, p=0.930, ‘poor responders’ F=0.27, p=0.764, entire sample F=1.87, p=0.160). ICC was “substantial” at 0.8 (95% C. I=0.6–0.9). Only the motor-sequencing NSS appear to be trait marker of schizophrenia in this sample. Other NSS seem to reflect symptomatic states of the disorder.Item The confirmatory factor structure of neurological soft signs in Nigerians with first episode(Elsevier B.V., 2015) Ojagbemi, A.; Akpa, O.; Esan, O.B.; Emsley, R.; Gureje, O.We describe empirically derived categories of NSS in first episode schizophrenia among indigenous Africans. A total of 84 Nigerian patients with the disease were assessed using the neurological evaluation scale. An exploratory factor analysis with orthogonal varimax rotation was first conducted and the factors derived based on a priori criteria were subjected to confirmatory analyses using SPSS 18.0 and AMOS 18.0. We tested four different competing models to identify the structure with the best fit to the data. The relationship of the derived NSS structure with the clinical characteristics of schizophrenia was then explored using the Pearson correlation method. The overall clinical status was assessed using the positive and negative syndrome scale and clinical global impression. Additional assessments included the pre-morbid adjustment scale and Calgary depression scale for schizophrenia. A three-factor structure in which stereognosis is prescribed to load into a ‘perceptual and motor sequencing’ category (audio–visual integration, fist-edge palm, rhythm tapping, extinction, right–left confusion) provided the best fit to the data (chi-square goodness of fittest=1.25; comparative fit index=0.95; root square means error of approximationItem Epidemiology of schizophrenia-- an update with a focus on developing countries(Taylor & Francis, 2012) Esan, O.B.; Ojagbemi, A.; Gureje, O.Developments over the past few decades in analytical epidemiological research in schizophrenia have challenged some long-held views about the disorder. For example, the conventional view that schizophrenia may have a favourable outcome in developing countries is currently being challenged by emerging empirical data. However, quality research from develop ing countries is still relatively scarce. In this article we review some major epidemiological fi ndings of schizophrenia with a focus on data from the developing world and within the context of the methodological issues and challenges associ ated with such studies.