Oluyomi Esan
University of Ibadan
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Featured researches published by Oluyomi Esan.
Psychological Medicine | 2017
John J. McGrath; Katie A. McLaughlin; Sukanta Saha; Sergio Aguilar-Gaxiola; A. Al-Hamzawi; Jordi Alonso; Ronny Bruffaerts; G. de Girolamo; P. de Jonge; Oluyomi Esan; S. Florescu; Oye Gureje; Josep Maria Haro; Chiyi Hu; Elie G. Karam; V. Kovess-Masfety; S. Lee; Jean-Pierre Lépine; Carmen C. W. Lim; M. E. Medina-Mora; Zeina Mneimneh; Beth Ellen Pennell; Marina Piazza; J. Posada-Villa; Nancy A. Sampson; Maria Carmen Viana; Miguel Xavier; Evelyn J. Bromet; Kenneth S. Kendler; Ronald C. Kessler
BACKGROUND Although there is robust evidence linking childhood adversities (CAs) and an increased risk for psychotic experiences (PEs), little is known about whether these associations vary across the life-course and whether mental disorders that emerge prior to PEs explain these associations. METHOD We assessed CAs, PEs and DSM-IV mental disorders in 23 998 adults in the WHO World Mental Health Surveys. Discrete-time survival analysis was used to investigate the associations between CAs and PEs, and the influence of mental disorders on these associations using multivariate logistic models. RESULTS Exposure to CAs was common, and those who experienced any CAs had increased odds of later PEs [odds ratio (OR) 2.3, 95% confidence interval (CI) 1.9-2.6]. CAs reflecting maladaptive family functioning (MFF), including abuse, neglect, and parent maladjustment, exhibited the strongest associations with PE onset in all life-course stages. Sexual abuse exhibited a strong association with PE onset during childhood (OR 8.5, 95% CI 3.6-20.2), whereas Other CA types were associated with PE onset in adolescence. Associations of other CAs with PEs disappeared in adolescence after adjustment for prior-onset mental disorders. The population attributable risk proportion (PARP) for PEs associated with all CAs was 31% (24% for MFF). CONCLUSIONS Exposure to CAs is associated with PE onset throughout the life-course, although sexual abuse is most strongly associated with childhood-onset PEs. The presence of mental disorders prior to the onset of PEs does not fully explain these associations. The large PARPs suggest that preventing CAs could lead to a meaningful reduction in PEs in the population.
Social Psychiatry and Psychiatric Epidemiology | 2015
Craig Morgan; Maia Hibben; Oluyomi Esan; Sujit John; Vikram Patel; Helen A. Weiss; Robin M. Murray; Gerard Hutchinson; Oye Gureje; Rangaswamy Thara; Alex Cohen
PurposeOur understanding of psychotic disorders is largely based on studies conducted in North America, Europe and Australasia. Few methodologically robust and comparable studies have been carried out in other settings. INTREPID is a programme of research on psychoses in India, Nigeria, and Trinidad. As a platform for INTREPID, we sought to establish comprehensive systems for detecting representative samples of cases of psychosis by mapping and seeking to engage all professional and folk (traditional) providers and potential key informants in defined catchment areas.MethodWe used a combination of official sources, local knowledge of principal investigators, and snowballing techniques.ResultsThe structure of the mental health systems in each catchment area was similar, but the content (i.e., type, extent, and nature) differed. Tunapuna–Piarco (Trinidad), for example, has the most comprehensive and accessible professional services. By contrast, Ibadan (Nigeria) has the most extensive folk (traditional) sector. We identified and engaged in our detection system—(a) all professional mental health services in each site (in- and outpatient services—Chengalpet, 6; Ibadan, 3; Trinidad, 5); (b) a wide range of folk providers (Chengalpet, 3 major healing sites; Ibadan, 19 healers; Trinidad: 12 healers); and c) a number of key informants, depending on need (Chengalpet, 361; Ibadan, 54; Trinidad, 1).ConclusionsMarked differences in mental health systems in each catchment area illustrate the necessity of developing tailored systems for the detection of representative samples of cases with untreated and first-episode psychosis as a basis for robust, comparative epidemiological studies.
International Psychogeriatrics | 2011
Bibilola D. Oladeji; Victor A. Makanjuola; Oluyomi Esan; Oye Gureje
BACKGROUND Chronic pain is quite common in the elderly and is often associated with comorbid depression, limitation of functioning and reduced quality of life. The aim of this study was to ascertain whether there is a differential risk of depression among persons with pain in different anatomical sites and to determine which pain conditions are independent risk factors for depression. METHODS Data are from the Ibadan Study of Ageing (ISA), a community-based longitudinal survey of persons aged 65 years and older from eight contiguous Yoruba-speaking states in Nigeria (n = 2152). Data were collected in face-to-face interviews; depression was assessed using the World Mental Health initiative version of the Composite International Diagnostic Interview (CIDI) while chronic pain was assessed by self-report (response rate = 74%). RESULTS Estimates of persistent pain (lasting more than six months), in different anatomical sites range from 1.3% to 12.8%, with the commonest being joint pains (12.8%), neck or back (spinal) pain (7.6%) and chest pain (3.0%). Significantly more pain conditions were reported by females and by respondents who were aged over 80 years. The risk for depression was higher in respondents with spinal, joint and chest pain. However, only chest pain was independently associated with depression after adjustments were made for pains at other sites and for functional disability. CONCLUSION Our data suggests that, among elderly persons, there is a differential association of depression with chronic pain that is related to the anatomical site of the pain.
Early Intervention in Psychiatry | 2016
Bonginkosi Chiliza; Akin Ojagbemi; Oluyomi Esan; Laila Asmal; Piet Oosthuizen; Martin Kidd; Oye Gureje; Robin Emsley
To assess the feasibility and effectiveness of depot antipsychotic (flupenthixol decanoate) combined with an assertive monitoring programme (AMP) in first‐episode schizophrenia.
Psychiatric Services | 2014
Oluyomi Esan; Jibril Abdumalik; Julian Eaton; Lola Kola; Woye Fadahunsi; Oye Gureje
This column describes the current state of resources and practice in mental health care in the Anglophone countries of West Africa: the Gambia, Sierra Leone, Ghana, Nigeria, and Liberia. Information was systematically gathered from the five countries by using a standard framework for country situation analysis. Mental health services, which are in various stages of development, are characterized by inadequate human resources and long policy neglect. Despite the low numbers of specialists, the region has made important contributions to community service development and global mental health research. Challenges include manpower development, policy and legislation updates, and increased attention to policy and budget. Although mental health service is still grossly inadequate in the context of human and material constraints, there are slowly evolving signs of positive modernization and service development.
Comprehensive Psychiatry | 2017
Oluyomi Esan; Christopher Osunbote; Oluremi Oladele; Sina Fakunle; Christopher Ehindero; Konstantinos N. Fountoulakis
INTRODUCTION Bipolar disorder (BD) is considered to have a better outcome in comparison to schizophrenia. However, recent data dispute this notion. The current study aimed to compare the burden of patients with BD type I (BD-I) in remission with similar patients with schizophrenia (SZ) in remission. MATERIALS AND METHODS Patients with schizophrenia (n=75) and BD-I (n=54) aged 18-64years were included in the study. The diagnosis was made with the SCID-I/P. Patients were assessed for sociodemographic variables, stigma, quality of life, disability, suicidality and current symptomatology. The statistical analysis included analysis of covariance (ANCOVA) and chi-square test. RESULTS ANCOVA with age at onset as a covariate and marital status and diagnosis as grouping variables returned no significant difference. DISCUSSION The results of the current study suggest that when in remission, BD-I patients do not differ from patients with schizophrenia with regards to stigma, quality of life, disability level and suicidality. Also, when in remission, they do not differ regarding the severity of their psychopathology.
Epilepsy & Behavior | 2016
Ayodele Fela-Thomas; Akinwande Akinhanmi; Oluyomi Esan
BACKGROUND A high prevalence of mood disorders exists in patients with epilepsy. In most cases, this is not detected and, consequently, not treated. This study aimed to determine the prevalence and correlates of major depressive disorder (MDD) among adolescents with epilepsy attending a child and adolescent clinic in Nigeria. METHODS We recruited 156 participants consecutively for the study. Adherence was assessed using the 8-item Morisky Medication Adherence Questionnaire, while the K-SADS was used to assess the presence of major depressive disorder. Seizure control was evaluated by the frequency of seizures within a year. RESULTS Major depressive disorder (DSM-IV criteria) was diagnosed in 28.2% of the participants. The age of participants (p=0.013), seizure control (p=0.03), medication adherence (p=0.045), frequency of seizures in the preceding 4weeks (p<0.001), and duration of illness (p<0.001) were all significantly associated with the presence of MDD. Participants with seizures occurring more than once weekly in the preceding 4weeks were 16 times more likely to have a MDD compared with those with no seizures in the preceding 4weeks (p<0.001, 95% C.I. [4.13, 65.43]), while participants with a duration of illness more than 10years were more than four times likely to have MDD compared with those with an illness duration of 5-10years (p<0.01, 95% C.I. [0.07, 0.70]). CONCLUSION The prevalence of MDD among patients with epilepsy was high. Poor seizure control, poor medication adherence, and long duration of illness were associated with the presence of MDD among such patients. Intervention should focus on ensuring good seizure control and optimal adherence in order to mitigate the impact of MDD in patients with epilepsy.
Psychological Medicine | 2016
Celia J. A. Morgan; Sujit John; Oluyomi Esan; Maia Hibben; Vikram Patel; Helen A. Weiss; Robin M. Murray; Gerard Hutchinson; Oye Gureje; R. Thara; Alex Cohen
BACKGROUND There are striking global inequities in our knowledge of the incidence, aetiology, and outcome of psychotic disorders. For example, only around 10% of research on incidence of psychotic disorders originates in low- and middle-income countries. We established INTREPID I to develop, implement, and evaluate, in sites in India (Chengalpet), Nigeria (Ibadan), and Trinidad (Tunapuna-Piarco), methods for identifying and recruiting untreated cases of psychosis, as a basis for investigating incidence and, subsequently, risk factors, phenomenology, and outcome. In this paper, we compare case characteristics and incidence rates across the sites. METHOD In each site, to identify untreated cases of psychoses in defined catchment areas, we established case detection systems comprising mental health services, traditional and spiritual healers, and key informants. RESULTS Rates of all untreated psychoses were 45.9 (per 1 00 000 person-years) in Chengalpet, 31.2 in Ibadan, and 36.9 in Tunapuna-Piarco. Duration of psychosis prior to detection was substantially longer in Chengalpet (median 232 weeks) than in Ibadan (median 13 weeks) and Tunapuna-Piarco (median 38 weeks). When analyses were restricted to cases with a short duration (i.e. onset within preceding 2 years) only, rates were 15.5 in Chengalpet, 29.1 in Ibadan, and 26.5 in Tunapuna-Piarco. Further, there was evidence of age and sex differences across sites, with an older average age of onset in Chengalpet and higher rates among women in Ibadan. CONCLUSION Our findings suggest there may be differences in rates of psychoses and in the clinical and demographic profiles of cases across economically and socially distinct settings.
Social Psychiatry and Psychiatric Epidemiology | 2015
Oluyomi Esan
Recently, the latest edition of the Diagnostic and Statistical Manual (DSM), the DSM-5, was published following extensive scrutiny and elaborate revision of the DSM-IV. According to the American Psychiatric Association (APA), the main concerns in modifying DSM-IV included optimizing clinical utility, upholding continuity with previous editions, and that recommendations should be directed by research evidence [1]. Therefore, the result expected was to be a text that is more useful for medical practitioners, patients and policy makers, and which should reveal not only scientific advances in our understanding of the causes and consequences of psychiatric disorders, but also common usage. The current DSM-5 criteria for schizoaffective disorder (SAD) makes schizoaffective disorder a longitudinal diagnosis instead of a cross-sectional diagnosis that existed in DSM-IV. Specifically it requires:
Qualitative Health Research | 2017
Alberta Sj Van der Watt; Gareth Nortje; Lola Kola; John Appiah-Poku; Caleb Othieno; Benjamin Harris; Bibilola D. Oladeji; Oluyomi Esan; Victor Makanjuola; LeShawndra N. Price; Soraya Seedat; Oye Gureje
We examined the scope of collaborative care for persons with mental illness as implemented by traditional healers, faith healers, and biomedical care providers. We conducted semistructured focus group discussions in Ghana, Kenya, and Nigeria with traditional healers, faith healers, biomedical care providers, patients, and their caregivers. Transcribed data were thematically analyzed. A barrier to collaboration was distrust, influenced by factionalism, charlatanism, perceptions of superiority, limited roles, and responsibilities. Pathways to better collaboration were education, formal policy recognition and regulation, and acceptance of mutual responsibility. This study provides a novel cross-national insight into the perspectives of collaboration from four stakeholder groups. Collaboration was viewed as a means to reach their own goals, rooted in a deep sense of distrust and superiority. In the absence of openness, understanding, and respect for each other, efficient collaboration remains remote. The strongest foundation for mutual collaboration is a shared sense of responsibility for patient well-being.