Chronic pain conditions and depression in the Ibadan Study of Ageing.

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.

Family-related adverse childhood experiences as risk factors for psychiatric disorders in Nigeria.

BACKGROUND: Adverse childhood experiences have been associated with a variety of mental health problems in adult life. AIMS: To examine whether this reported link between childhood experiences and mental health disorders in adult life applies in a Sub-Saharan African setting where cultural and family attributes may be different. METHOD: A multistage random sampling was used in the Nigerian Survey of Mental Health and Well-Being (NSMHW) to select respondents for face-to-face interviews. Assessments of family-related adverse childhood experiences and lifetime mental health disorders were conducted with the Composite International Diagnostic Interview (CIDI 3.0). RESULTS: Almost half of the respondents had experienced an adverse childhood experience within the context of the family before they were 16 years of age. Associations between adverse childhood experiences and adult mental health disorders were few and were attenuated when clustering of adverse childhood experience and disorder comorbidities were accounted for. There was an elevated likelihood of adult substance use disorders among individuals who had experienced family violence and neglect or abuse. Parental psychopathology was associated with a significantly increased risk for developing mood disorders. CONCLUSIONS: Adverse childhood experiences reflecting violence in the family, parental criminality and parental mental illness and substance misuse were more likely to have significant mental health consequences in adulthood.

Validation of short screening tools for common mental disorders in Nigerian general practices.

OBJECTIVE: The objective was to examine the psychometric properties of two brief screening questionnaires for common mental disorders in general practices in areas speaking the three main Nigerian languages. METHOD: Consecutives attendees of selected general practices in Ibadan, Enugu and Kaduna were screened with the General Health Questionnaire 12-item version (GHQ12) and K6. We selected all cases and 50% of noncases for second-stage interview with the Composite International Diagnostic Interview. The receiver operating characteristic curves were generated for both questionnaires, and optimal cutoffs were determined. Exploratory factor analysis was done for both questionnaires. RESULTS: The K6 had an area under the curve (AUC) of 0.62 for depression and 0.58 for anxiety disorder. The GHQ12 had an AUC of 0.74 for depression, while that for generalized anxiety disorder was 0.6. The GHQ12 was able to correctly classify 75% of the subjects with or without depression, while the K6 was able to correctly classify 56% of the subjects with or without depression. The optimal cutoff for both questionnaires was 4, selecting the point of best balance of sensitivity and specificity. CONCLUSION: The findings suggest that the GHQ12 will be a useful tool in screening for common mental disorders in general practice in Nigeria.

Insomnia and role impairment in the community : results from the Nigerian survey of mental health and wellbeing.

BACKGROUND: Estimates of the occurrence of insomnia are not available in sub-Sahara Africa where demographic profile is different from that in developed countries. However, such estimates need to be considered along with associated functional role impairment in assessing the extent of public health burden due to insomnia. METHODS: Face-to-face interviews with a representative sample of persons aged 18 years and over (n = 6,752) in 21 of Nigeria's 36 states (representing about 57% of the national population) was conducted using the Composite International Diagnostic Interview, version 3. Role impairment, defined as proportion of lost work over the prior month, was assessed using the World Health Organization's Disability Assessment Schedule. RESULTS: Insomnia, defined as any sleep complaint lasting at least two weeks in the previous 12-months, was reported by 11.8%, with rates varying between 5.4% for early morning awakening, 7.7% for difficulty initiating sleep, and 8.5% for difficulty maintaining sleep. Increasing age was associated with higher rates of every type of insomnia but females were only more likely than males to report difficulty initiating sleep. Independently, chronic pain conditions, chronic medical conditions, as well as the presence of a DSM-IV mental disorder significantly increased the risk of having insomnia. Multivariate analysis suggests that, even though demographic factors and comorbid physical and mental conditions partly accounted for the association of insomnia with role impairment, a decrement of about 6% of estimated lost work in the prior month was probably attributable to insomnia. CONCLUSIONS: Findings indicate that insomnia is common even in this relatively young population. Its negative effect on role functioning is considerable, is not entirely accounted for by comorbid medical and mental conditions, and may be of public health significance.

Lifetime and 12-month prevalence of mental disorders in the Nigerian Survey of Mental Health and Well-Being.

BACKGROUND: Large-scale community studies of the prevalence of mental disorders using standardised assessment tools are rare in sub-Saharan Africa. AIMS: To conduct such a study. METHOD: Multistage stratified clustered sampling of households in the Yoruba-speaking parts of Nigeria. Face-to-face interviews used the World Mental Health version of the Composite International Diagnostic Interview (WMH-CIDI). RESULTS: Of the 4984 people interviewed (response rate 79.9%), 12.1% had a lifetime rate of at least one DSM-IV disorder and 5.8% had 12-month disorders. Anxiety disorders were the most common (5.7% lifetime, 4.1% 12-month rates) but virtually no generalised anxiety or post-traumatic stress disorder were identified. Of the 23% who had seriously disabling disorders, only about 8% had received treatment in the preceding 12 months. Treatment was mostly provided by general medical practitioners; only a few were treated by alternative practitioners such as traditional healers. CONCLUSIONS: The observed low rates seem to reflect demographic and ascertainment factors. There was a large burden of unmet need for care among people with serious disorders.