Lifestyle and incident dementia: A COSMIC individual participant data meta­analysis.

INTRODUCTION: The LIfestyle for BRAin Health (LIBRA) index yields a dementia risk score based on modifiable lifestyle factors and is validated in Western samples. We investigated whether the association between LIBRA scores and incident dementia is moderated by geographical location or sociodemographic characteristics. METHODS: We combined data from 21 prospective cohorts across six continents (N = 31,680) and conducted cohort-specific Cox proportional hazard regression analyses in a two-step individual participant data meta-analysis. RESULTS: A one-standard-deviation increase in LIBRA score was associated with a 21% higher risk for dementia. The association was stronger for Asian cohorts compared to European cohorts, and for individuals aged ≤75 years (vs older), though only within the first 5 years of follow-up. No interactions with sex, education, or socioeconomic position were observed. DISCUSSION: Modifiable risk and protective factors appear relevant for dementia risk reduction across diverse geographical and sociodemographic groups. HIGHLIGHTS: A two-step individual participant data meta-analysis was conducted. This was done at a global scale using data from 21 ethno-regionally diverse cohorts. The association between a modifiable dementia risk score and dementia was examined. The association was modified by geographical region and age at baseline. Yet, modifiable dementia risk and protective factors appear relevant in all investigated groups and regions.

Addressing the challenges of integrating care for perinatal depression in primary care in Nigeria.

PURPOSE: This report provides the results of a task-shared approach for integrating care for perinatal depression (PND) within primary maternal and child healthcare (PMCH), including the factors that may facilitate or impede the process. METHODS: This hybrid implementation-effectiveness study guided by the Replicating Effective Programmes framework was conducted in 27 PMCH clinics in Ibadan, Nigeria. The primary implementation outcome was change in the identification rates of PND by primary health care workers (PHCW) while the primary effectiveness outcome was the difference in symptom remission (EPDS score ≤ 5) 6 months postpartum. Outcome measures were compared between two cohorts of pregnant women, one recruited before and the other after training PHCW to identify and treat PND. Barriers and facilitators were explored in qualitative interviews. RESULTS: Identification of PND improved from 1.4% before to 17.4% after training; post-training rate was significantly higher in clinics where PHCW routinely screened using the 2-item patient health questionnaire (24.8%) compared to non-screening clinics (5.6%). At 6-months postpartum, 60% of cohort one experienced remission from depression, compared to 56.5% cohort two [OR-0.9 (95%CI-0.6, 1.3) p = 0.58]. Identified facilitators for successful integration included existence of policy specifying mental health as a component of PHC, use of screening to aid identification and supportive supervision, while barriers included language and cultural attitudes towards mental health and human resource constraints. PHCW were able to make adaptations to address these barriers. CONCLUSIONS: Successful implementation of task-shared care for perinatal depression requires addressing staff shortages and adopting strategies that can improve identification by non-specialist providers. TRIAL REGISTRATION: This study was retrospectively registered 03 Dec 2019. https://doi.org/10.1186/ISRCTN94230307 .

Cascade training for scaling up care for perinatal depression in primary care in Nigeria.

BACKGROUND: Task-shared care is a demonstrated approach for integrating mental health into maternal and child healthcare (MCH) services. Training and continued support for frontline providers is key to the success of task sharing initiatives. In most settings this is provided by mental health specialists. However, in resource constrained settings where specialists are in short supply, there is a need to explore alternative models for providing training and supportive supervision to frontline maternal care providers. This paper reports on the impact of a cascade training (train-the-trainers) approach in improving the knowledge and attitudes of primary healthcare workers (PHCW) to perinatal depression. METHODS: Senior primary health care providers selected from across participating local government areas were trained to provide training to other PHCWs. The training sessions facilitated by these trainers were observed and rated for fidelity by specialist trainers, while the trainees provided their impression of and satisfaction with the training sessions using predesigned assessment forms. Training outcomes assessed included knowledge of depression (using mhGAP training questions and knowledge of depression questionnaire) and attitude towards providing care for depression (revised depression attitude questionnaire (R-DAQ)) measured pre and post training as well as six months after training. RESULTS: Trainees were 198 PHCWs (94.4% female), who routinely provide MCH services in 28 selected primary care clinics and had between 6- and 34-years' experience. Training was provided by 11 trained trainers who were general physicians or senior nurses. Training sessions were rated high in fidelity and on training style. Sessions were rated excellent by 77.8% of the trainees with the trainers described as knowledgeable, effective and engaging. Knowledge of depression mean score improved from a pre-training level of 12.3 ± 3.5 to 15.4 ± 3.7, immediately post-training and 14.7 ± 3.2, six months post-training (both comparisons: p < 0.001). The proportion of PHCW workers endorsing statements indicative of positive attitudes on the professional confidence and the generalist perspective modules of the R-DAQ also increased with training. CONCLUSION: Our findings suggest that cascade training can be an effective model for rapidly providing training and upskilling frontline PHCWs to deliver care for women with perinatal depression in resource limited settings. TRIAL REGISTRATION: This study was retrospectively registered 03 December 2019. https://doi.org/10.1186/ISRCTN 94,230,307.

Use of Antihypertensives, Blood Pressure, and Estimated Risk of Dementia in Late Life: An Individual Participant Data Meta-Analysis.

Importance: The utility of antihypertensives and ideal blood pressure (BP) for dementia prevention in late life remains unclear and highly contested. Objectives: To assess the associations of hypertension history, antihypertensive use, and baseline measured BP in late life (age >60 years) with dementia and the moderating factors of age, sex, and racial group. Data Source and Study Selection: Longitudinal, population-based studies of aging participating in the Cohort Studies of Memory in an International Consortium (COSMIC) group were included. Participants were individuals without dementia at baseline aged 60 to 110 years and were based in 15 different countries (US, Brazil, Australia, China, Korea, Singapore, Central African Republic, Republic of Congo, Nigeria, Germany, Spain, Italy, France, Sweden, and Greece). Data Extraction and Synthesis: Participants were grouped in 3 categories based on previous diagnosis of hypertension and baseline antihypertensive use: healthy controls, treated hypertension, and untreated hypertension. Baseline systolic BP (SBP) and diastolic BP (DBP) were treated as continuous variables. Reporting followed the Preferred Reporting Items for Systematic Review and Meta-Analyses of Individual Participant Data reporting guidelines. Main Outcomes and Measures: The key outcome was all-cause dementia. Mixed-effects Cox proportional hazards models were used to assess the associations between the exposures and the key outcome variable. The association between dementia and baseline BP was modeled using nonlinear natural splines. The main analysis was a partially adjusted Cox proportional hazards model controlling for age, age squared, sex, education, racial group, and a random effect for study. Sensitivity analyses included a fully adjusted analysis, a restricted analysis of those individuals with more than 5 years of follow-up data, and models examining the moderating factors of age, sex, and racial group. Results: The analysis included 17 studies with 34 519 community dwelling older adults (20 160 [58.4%] female) with a mean (SD) age of 72.5 (7.5) years and a mean (SD) follow-up of 4.3 (4.3) years. In the main, partially adjusted analysis including 14 studies, individuals with untreated hypertension had a 42% increased risk of dementia compared with healthy controls (hazard ratio [HR], 1.42; 95% CI 1.15-1.76; P = .001) and 26% increased risk compared with individuals with treated hypertension (HR, 1.26; 95% CI, 1.03-1.53; P = .02). Individuals with treated hypertension had no significant increased dementia risk compared with healthy controls (HR, 1.13; 95% CI, 0.99-1.28; P = .07). The association of antihypertensive use or hypertension status with dementia did not vary with baseline BP. There was no significant association of baseline SBP or DBP with dementia risk in any of the analyses. There were no significant interactions with age, sex, or racial group for any of the analyses. Conclusions and Relevance: This individual patient data meta-analysis of longitudinal cohort studies found that antihypertensive use was associated with decreased dementia risk compared with individuals with untreated hypertension through all ages in late life. Individuals with treated hypertension had no increased risk of dementia compared with healthy controls.

Risk factors and outcomes of delirium in hospitalized older Ghanaians.

OBJECTIVES: Delirium has been rarely studied in older West Africans. We sought to investigate its correlates and outcomes in hospitalized older Ghanaians. METHODS: This was a one-month prospective observational study. Delirium prevalence was assessed within 24 h of admission using the Confusion Assessment Method (CAM). Incident delirium was determined with repeat CAM assessments on post-admission days 4, 7, 14, 21 and 28, after censoring participants with prevalent delirium. Multivariate logistic regression analyses were used to explore risk factors. Estimates of adjusted hazard ratios for mortality were derived with the discrete time version of the Cox regression model for time invariant explanatory variables. RESULTS: Among 483 participants, 250 (51.8%, 95% CI: 47.3-56.3) had prevalent delirium while 10 of the remaining 233 (4.3%, 95% CI: 2.1-7.8) developed incident delirium. Being older than 80 years (adjusted odds ratio (OR) = 2.1, 95% CI: 1.2-3.6), having no formal education (OR = 2.2, 95% CI: 1.4-3.4), stroke (OR = 1.8, 95% CI: 1.1-3.0), infection (OR = 1.9, 95% CI: 1.2-3.0), and high Triage Early Warning Score (OR = 6.9, 95% CI: 2.5-19.0) predicted delirium. Delirium (adjusted hazard ratio (HR) = 1.8, 95% CI: 1.0-3.3) and high TEWS (HR = 4.6 (95% CI: 1.7-12.7) at baseline predicted mortality. These factors also predicted longer hospital stay. CONCLUSION: Over half of hospital-treated older Ghanaians in the present study had delirium on the first day of admission. The syndrome prolonged hospitalisation and increased mortality risk. Future studies in West Africa may investigate the epidemiology of delirium in primary care and community settings.

Correlates of Gait Speed Among Older Adults From 6 Countries: Findings From the COSMIC Collaboration.

BACKGROUND: Few studies have compared gait speed and its correlates among different ethnogeographic regions. The goals of this study were to describe usual and rapid gait speed, and identify their correlates across Australian, Asian, and African countries. METHODS: We used data from 6 population-based cohorts of adults aged 65+ from 6 countries and 3 continents (N = 6 472), with samples ranging from 231 to 1 913. All cohorts are members of the Cohort Studies of Memory in an International Consortium collaboration. We investigated whether clinical (body mass index [BMI], hypertension, stroke, apolipoprotein status), psychological (cognition, mood, general health), and behavioral factors (smoking, drinking, physical activity) correlated with usual (N = 4 cohorts) and rapid gait speed (N = 3 cohorts) similarly across cohorts. Regression models were controlled for age, sex, and education, and were sex-stratified. RESULTS: Age- and sex-standardized usual gait speed means ranged from 0.61 to 1.06 m/s and rapid gait speed means ranged from 1.16 to 1.64 m/s. Lower BMI and better cognitive function consistently correlated with faster gait speed in all cohorts. Less consistently, not having hypertension and greater physical activity engagement were associated with faster gait speed. Associations with mood, smoking, and drinking were largely nonsignificant. These patterns were not attenuated by demographics. There was limited evidence that the associations differed by sex, except physical activity, where the greater intensity was associated with usual gait among men but not women. CONCLUSIONS: This study is among the first to describe the usual and rapid gait speeds across older adults in Africa, Asia, and Australia.

Dose-response relationship between late-life physical activity and incident dementia: A pooled analysis of 10 cohort studies of memory in an international consortium.

INTRODUCTION: Though consistent evidence suggests that physical activity may delay dementia onset, the duration and amount of activity required remains unclear. METHODS: We harmonized longitudinal data of 11,988 participants from 10 cohorts in eight countries to examine the dose-response relationship between late-life physical activity and incident dementia among older adults. RESULTS: Using no physical activity as a reference, dementia risk decreased with duration of physical activity up to 3.1 to 6.0 hours/week (hazard ratio [HR] 0.88, 95% confidence interval [CI] 0.67 to 1.15 for 0.1 to 3.0 hours/week; HR 0.68, 95% CI 0.52 to 0.89 for 3.1 to 6.0 hours/week), but plateaued with higher duration. For the amount of physical activity, a similar pattern of dose-response curve was observed, with an inflection point of 9.1 to 18.0 metabolic equivalent value (MET)-hours/week (HR 0.92, 95% CI 0.70 to 1.22 for 0.1 to 9.0 MET-hours/week; HR 0.70, 95% CI 0.53 to 0.93 for 9.1 to 18.0 MET-hours/week). DISCUSSION: This cross-national analysis suggests that performing 3.1 to 6.0 hours of physical activity and expending 9.1 to 18.0/MET-hours of energy per week may reduce dementia risk.

Effect of intervention delivered by frontline maternal care providers to improve outcome and parenting skills among adolescents with perinatal depression in Nigeria (the RAPiD study): A cluster randomized controlled trial.

BACKGROUND: Perinatal depression is more common and is associated with greater negative consequences among adolescents than adults. Psychosocial interventions designed for adults may be inadequate at addressing the unique features of adolescent perinatal depression. METHODS: In a two-arm parallel cluster randomized trial conducted in thirty primary maternal care clinics in Ibadan, Nigeria (15-intervention and 15-control) we compared age-appropriate intervention consisting of problem-solving therapy, behavioral activation, parenting skills training, and parenting support from a self-identified adult to care as usual. Pregnant adolescents (aged <20 years) at fetal gestational age16-36 weeks with moderate to severe depression were recruited. Primary outcomes were depression symptoms (Edinburgh Postnatal Depression Scale, EPDS) and parenting practices (Infant-Toddler version of the Home Inventory for Measurement of the Environment, HOME-IT) at six-months postnatal. RESULTS: There were 242 participants (intervention arm: 141; Control arm: 101), with a mean age of 18∙0 (SD-1∙2). Baseline mean EPDS score was 14∙2 (SD-2.1); 80∙1 % completed the six-month postnatal follow-up. The intervention group had lower level of depressive symptoms than the control group, mean EPDS scores: 5∙5 (SD-3∙6) versus 7∙2 (SD-4∙0) (adjusted mean difference -1∙84 (95%CI- 3∙06 to -0∙62; p = 0∙003) and better parenting practices, mean total HOME-IT scores: 29∙8 (SD-4∙4) versus 26∙4 (SD-4∙2) (adjusted mean difference 3∙4 (95%Cl- 2∙12 to 4∙69, p = 0∙001). LIMITATIONS: This study explored the effect of complex interventions making it difficult to know precisely what aspects produced the outcomes. CONCLUSIONS: An age-appropriate psychosocial intervention package holds promise for scaling up care for adolescents with perinatal depression especially in resource-constrained settings. TRIAL REGISTRATION: ISRCTN16775958. Registered on 30 April 2019.

Prevalence and correlates of depression among pregnant adolescents in primary maternal care in Nigeria.

To examine the prevalence as well as the clinical and psychosocial factors associated with depression and depression severity in pregnant adolescents. Participants were consecutively registered pregnant adolescents presenting to 30 selected primary maternal and child healthcare centers in Ibadan, Nigeria, who were screened for enrolment into an intervention trial for perinatal depression (depression defined as a score of ≥ 12 on the Edinburg Postnatal Depression Scale [EPDS] and met the DSM-IV diagnostic criteria for depression). Of the 1359 pregnant adolescents screened, 246 (18.1%) had depression. Mean age was 18.4 (sd 1.00), 58.9% were either married or cohabiting, 91.4% were primipara, and the mean gestational age was 23.8 weeks (sd 5.4 weeks). Food insecurity (going to bed hungry at least once in the previous week because there was no food to eat) was reported by 13.3%. In bivariate analysis, younger age, not living with a partner, unemployment, and food insecurity were associated with depression. In bivariate analysis, younger age, not living with a partner, unemployment and food insecurity were associated with depression, while younger age, being single and food insecurity were independently associated with being depressed in multivariate analysis. Severity of depression was related to age, higher anxiety and disability scores, lower quality of life scores across all domains and poorer attitudes towards pregnancy. Depression was associated with indices of higher social disadvantage among adolescents. Delaying childbearing and measures aimed at alleviating poverty may be important in preventing depression in this vulnerable group.

Aftermath of anti-police protests in Nigeria: Burden and predictors of psychiatric morbidity among protesters and non-protesters.

OBJECTIVES: Anti-police (#EndSARS) protests took place in October 2020 across several Nigerian cities, resulting in deaths, injuries and loss of property, but the psychological sequelae of these protests have not been studied. METHOD: In a cross-sectional online survey, we collected data on psychiatric morbidity and potential risk factors from 426 Nigerian social media users, who self-identified as participants or non-participants in a recent anti-police protest. RESULTS: We found elevated rates of psychiatric morbidity, with worse outcomes for protesters compared to non-protesters (psychological distress [44.2% vs 29.8%], depression [26.0% vs 14.9%], anxiety [51.0% vs 29.8%], post-traumatic stress disorder [7.4% vs 1.8%], current substance use [11.2% vs 4.5%] and suicidal ideation [7.1% vs 4.4%], respectively). After adjusting for the effects of COVID-19 pandemic and previous mental health diagnosis, the predictors of poor mental health among non-protesters were being unmarried (odds ratio = 7.4, p = 0.01) and low resilience (odds ratio range = 4.1-5.4, p < 0.03) while for the protesters, the predictors were low resilience (odds ratio range = 2.9-4.7, p < 0.01), being from Northern Nigeria (odds ratio = 4.7, p < 0.01) or residing in Northern Nigeria (odds ratio = 2.8, p = 0.03), being under-/unemployed (odds ratio range = 2.1-2.5, p < 0.04), holding the view that the protest was caused by the state of the economy (odds ratio = 2.0, p = 0.01), belief that the protest had a direct negative impact on the protester (odds ratio = 2.3, p = 0.04) and willingness to participate in future protests (odds ratio = 4.13, p = 0.02). CONCLUSION: We conclude that participating in the #EndSARS protest was associated with significant psychiatric morbidity. There is need to recognise and address the mental health sequelae of collective actions, and invest in programmes that build resilience and address socio-political determinants of mental health, especially with a focus on youth.

New Onset Poststroke Dementia at one Year in Africans.

BACKGROUND: There is limited information on new onset poststroke dementia (NPSD) in sub-Saharan Africa (SSA). We estimated incidence, cumulative incidence, risk factors and outcome of NPSD at 1 year in Nigerian survivors of a first-ever stroke. METHODS: Hospital-based prospective observational study. Assessments for global cognition, learning, memory, executive and activities of daily life (ADL) functioning were conducted at 3 poststroke timepoints (Baseline, 3- and 12 months). NPSD was ascertained according to the "National Institute of Neurological Disorders and Stroke and the Association Internationale pour la Recherche et l'Enseignement en Neurosciences (NINDS-AIREN) criteria." Outcomes were assessed using the modified Rankin Scale (mRS), center for epidemiologic studies depression scale (CES-D 10), health related quality of life in stroke patients (HRQOLISP-26) and caregivers strain index (CSI). RESULTS: Among 144 stroke survivors who were free of dementia at baseline, we found a 1-year cumulative incidence of 4.52% (95% C.I = 3.20, 6.39). In multivariate Cox regression analyses, diabetes was associated with NPSD (Hazard Ratio = 2.10, 95% CI = 1.02, 4.35). NPSD at 3 months was independently associated with motor decline [Mean difference (MD) in mRS = 1.6, 95% C.I = 0.9, 2.3)], depression (MD in CES-D = 2.9, 95% C.I = 0.3, 5.4), caregivers burden (MD in CSI = 1.2, 95% C.I = 0.5, 1.8), and poor quality of life (MD in HRQOLISP-26 = -11.2, 95% C.I = -15.7, -6.8) at 1 year. CONCLUSION: Approximately 4.5% of stroke survivors in Nigeria had NPSD at 1 year. Diabetes, which can be prevented, represent a primary prevention target for NPSD and its consequences in SSA.

Theory-driven development of a mobile phone supported intervention for adolescents with perinatal depression.

PURPOSE: This paper describes the design of a theory-informed pragmatic intervention for adolescent perinatal depression in primary care in Nigeria. METHODS: We conducted Focus Group Discussions (FGDs) among 17 adolescent mothers and 25 maternal health care providers with experience in the receipt and provision of care for perinatal depression. The Consolidated Framework for Implementation Research (CFIR) was used to systematically examine the barriers and facilitators affecting adolescent mothers' use of an existing intervention package for depression. The Theoretical Domain Framework (TDF) and the Capability, Opportunity, Motivation, Behaviour (COM-B) model were used to analyze the results of the data across the five CFIR domains. RESULTS: FGD analysis revealed that care providers lacked knowledge on approaches to engage young mothers in treatment. Young mothers had poor treatment engagement, low social support, and little interest in parenting. A main characteristic of the newly designed intervention is the inclusion of age-appropriate psychoeducation supported with weekly mobile phone calls, to address treatment engagement and parenting behaviours of young mothers. Also in the outer setting, low social support from relatives was addressed with education, "as need arises" phone calls, and the involvement of "neighborhood mothers". In the inner settings, care providers' behaviour is addressed with training to increase their capacity to engage young mothers in treatment. CONCLUSION: A theory-based approach helped develop an age-appropriate intervention package targeting depression and parenting skills deficit among perinatal adolescents in primary maternal care and in which a pragmatic use of mobile phone was key.

Late-life disability trajectories in Yoruba Nigerians and the Spanish population: a state space model in continuous time.

OBJECTIVES: We compared the trajectory of activities of daily living (ADL) in a nationally representative sample of older Nigerians with their Spanish peers and identified factors to explain country-specific growth models. METHODS: Data from two household multistage probability samples were used, comprising older adults from Spain (n = 2,011) and Nigeria (n = 1,704). All participants underwent assessment for ADL. Risk factors including sex, household income, urbanicity, years of education, depression, alcohol consumption and smoking were assessed using validated methods. State-space model in continuous time (SSM-CT) methods were used for trajectory comparison. RESULTS: Compared with Nigerians (µADL80=0.44, SE = 0.015, p < 0.001), Spanish older adults had higher disability scores (µADL80=1.23, SE = 0.021, p < 0.001). In SSM-CT models, the rate of increase in disability was faster in Nigerians (Nigeria: ß = 0.061, p<.01; Spain: ß = 0.028, p < 0.010). An increasing course of disability in the Spanish sample was predicted by female sex, lower education and depression diagnosis. CONCLUSION: The rate of increase in disability was faster in older Nigerians living in an economically disadvantaged context.

Prestroke cognitive decline in africans: Prevalence, predictors and association with poststroke dementia.

OBJECTIVES: Pre-existing cognitive decline is a risk factor for stroke onset and poststroke dementia. There is a knowledge gap on prestroke cognitive decline in indigenous Africans. We estimated prevalence and predictors of prestroke cognitive decline, as well as its association with poststroke dementia at one year in Nigerian survivors of a first ever stroke. METHODS: Prospective observational study. Prestroke cognitive decline was ascertained using an average score > 3.31 on the 16-item Informant Questionnaire for Cognitive Decline in the Elderly (IQ-CODE). Poststroke dementia was ascertained according to the 'National Institute of Neurological Disorders and Stroke and the Association Internationale pour la Recherche et l'Enseignement en Neurosciences (NINDS-AIREN) criteria'. Associations were investigated using multivariate logistic regression models and presented as odds ratios (O.R) within 95% confidence intervals (C.I). RESULTS: Among 150 stroke survivors, prestroke cognitive decline was found in 25 (16.7%, 95% C.I = 11.5%-23.6%). In analyses adjusting for the effect of age, education and stroke severity, prestroke cognitive decline was associated with diabetes mellitus (O.R = 3.0, 95% C.I = 1.2-7.6). Ten (62.5%) survivors in the prestroke cognitive decline sub-sample developed dementia at one-year poststroke. In analyses adjusting for the effects of age, education, stroke severity and comorbid diabetes mellitus, survivors with prestroke cognitive decline had six times the odds of dementia at one year poststroke (O.R = 6.2, 95% C.I = 1.3-30.4). CONCLUSION: Prestroke cognitive decline is common, assessment is feasible and identifying pre-stroke problems has prognostic implications.

Cognitive decline before and after a first-ever stroke in Africans.

OBJECTIVES: There is a knowledge gap on the impact of pre-existing cognitive decline on poststroke decline in indigenous Africans. We describe the trajectories of domain-specific cognitive and activities of daily life (ADL) functioning across the first year of stroke in Nigerians with pre-existing cognitive decline. MATERIALS AND METHODS: Prospective observational study. Prestroke cognitive decline was ascertained retrospectively using the 16-item Informant Questionnaire for Cognitive Decline in the Elderly (IQCODE). Assessments for global cognition, learning, memory, executive and ADL functioning were conducted at 3 time points using the Mini-Mental state examination (MMSE), 10-words list learning and delayed recall test (10 WDRT), Animal naming test and Barthel index, respectively. RESULTS: Among 150 stroke survivors, prestroke cognitive decline was found in 25 (16.7%, 95% C.I = 11.5%-23.6%). In linear regression analyses adjusting for the effect of age, education, stroke severity and comorbid diabetes mellitus, prestroke cognitive decline predicted poor memory scores at one year [Adjusted standardized mean difference (SMD) = -0.6, 95% C.I = -1.1, -0.1, p = 0.016)]. The association of prestroke cognitive decline with poststroke poor memory was substantially mediated by age (SMD = -0.9, 95% C.I = -1.4, -0.4, p < 0.001). CONCLUSION: Pre-existing cognitive decline in this sample was associated with an age-mediated poor memory function at one-year poststroke. Early institution of targeted cognitive rehabilitation in stroke survivors with pre-existing cognitive decline may reduce the neurocognitive burden of stroke in Black Africans.

The Independent Association of Prestroke Psychiatric Symptoms and Acute Phase Delirium with Poststroke Mortality at One Year in Nigeria.

BACKGROUND: Undetected acute phase delirium contributes to high poststroke mortality in sub-Saharan Africa (SSA). The present study adds to existing literature by examining the association of prestroke psychiatric symptoms with poststroke mortality at 3 and 12 months in Nigeria. METHODS: A prospective observational study with repeated delirium assessments conducted using the Confusion Assessment Method (CAM). Delirium was characterised in participants meeting criteria in the Fifth edition of the Diagnostic and Statistical Manual of mental disorders (DSM-V) as well as in those with ≥two core delirium features. Prestroke psychiatric symptoms were ascertained using the Neuropsychiatric Inventory Questionnaire (NPI-Q). Information on mortality was obtained by research supervisors during medical follow-up. Associations were investigated using multivariate logistic regression analyses and presented as odds ratios (O.R) within 95% confidence intervals (C.I). RESULTS: Forty-five (30%) of 150 participants who provided data in the first week of stroke died by one-year follow-up. Those who died were more likely to have had a prestroke psychiatric symptom (64.4%, p=0.005) and delirium in the acute phase (60.0%, p=0.002). In analyses adjusting for the effect of age, education, tobacco smoking and stroke severity, prestroke psychiatric symptoms (O.R=3.3, 95% C.I=1.3,8.2; O.R=2.2, 95% C.I=1.0,4.6) and acute phase delirium (O.R=3.1, 95% C.I= 1.2,7.6; O.R=3.4, 95% C.I=1.5, 7.6) predicted mortality at 3 and 12 months poststroke, respectively. CONCLUSION: This study found that prestroke psychiatric symptoms and acute phase delirium independently predicted post-stroke mortality at 3- and 12 months. Detection and treatment of mental health conditions in the population at increased risk of stroke may help reduce poststroke mortality in SSA.

Spontaneous and emergent extrapyramidal syndromes in Black Africans with first-episode schizophrenia and first exposure to antipsychotics.

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 (r = 0.2, p = 0.043; ß = 0.6, p = 0.043), 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.

Cognitive, Functional, and Mortality Outcomes of Attenuated Delirium Syndrome in Stroke Survivors.

OBJECTIVES: There is a knowledge gap on the prognostic significance of subsyndromes of delirium. We describe the association of poststroke attenuated delirium syndrome (ADS) with cognitive, functional, and mortality outcomes at 3 months. METHODS: A longitudinal observational study in which repeated assessments for delirium symptoms were conducted in the first week of stroke using the confusion assessment method. Attenuated delirium syndrome was characterized in survivors who were free of the full delirium syndrome but had ≥2 core features of delirium. Baseline and follow-up assessments were conducted using the Mini-Mental State Examination (MMSE), 10-word list learning and delayed recall test, Animal naming test, and Barthel index. RESULTS: Among 150 participants recruited consecutively over 2 years, ADS was present in 32 (21.3%). Of 121 who were free of the full delirium syndrome, 21 (17.4%) had died by 3 months. Those who survived were more likely to be receiving treatment for systemic hypertension (88.5%, P = .007). In analyses adjusting for the effect of age, economic status, and systemic hypertension, ADS in the first week of stroke predicted cognitive decline at 3 months ([mean difference (MD) in MMSE scores = -3.8, 95% CI = -7.0 to -0.7, P = .019]). However, ADS was not associated with greater decline in activities of daily life (MD = -0.4, 95% CI = -2.8 to 2.0) or significant odds ratio (OR) of mortality (OR = 2.3, 95% CI = 0.8-6.3). CONCLUSION: Attenuated delirium syndrome may be an important marker of cognitive impairment at 3 months poststroke. Its detection may lead to identification of stroke survivors who are likely to benefit from evidence-based preventive interventions for poststroke cognitive decline.

Prevalence, predictors, and prognoses of prestroke neuropsychiatric symptoms at 3 months poststroke.

OBJECTIVES: Prior neuropsychiatric disturbances are risk factors for stroke. There is a knowledge gap on the predictors of prestroke psychopathology, as well as their association with stroke outcomes in survivors living in low- and middle-income countries (LMICs). We estimated prevalence, predictors, and association of prestroke neuropsychiatric symptoms with poststroke depression (PSD), disability, and mortality. DESIGN: Prospective observation. SETTING: Nigeria. PARTICIPANTS: Adult ischemic and hemorrhagic stroke survivors. MEASUREMENTS: Prestroke psychopathology were ascertained using the Neuropsychiatric Inventory Questionnaire (NPI-Q). Outcomes were assessed using validated tools, including the Centre for Epidemiologic Studies - Depression Scale (CES-D 10) and modified Rankin scale (mRS). Independent associations were investigated using regression models with Bonferroni corrections, and presented as standardized mean differences (SMD) and odds ratios (OR) within 95% confidence intervals (CI). RESULTS: Among 150 participants, prestroke neuropsychiatric symptoms were found in 78 (52%). In multivariate logistic regression analyses, prestroke sleep disturbance was associated with systemic hypertension (OR = 5.39, 95% CI = 1.70-17.08). Prestroke neuropsychiatric symptoms independently predicted worse motor disability scores (SMD = 0.92, 95% CI = 0.21-1.62) and greater odds of poststroke mortality (OR = 2.7, 95% CI = 1.1-7.0) at 3 months. However, prestroke depression was not significantly associated with PSD. CONCLUSION: Prestroke sleep disturbances was associated with systemic hypertension, a key index of high cardiovascular risk profile and stroke. The findings should energize before-the-stroke identification and prioritization of limited treatment resources in LMICs to persons with sleep symptoms who have multiple, additional, risks of stroke.

The roles of depression and social relationships in the onset and course of loneliness amongst Nigerian elders.

OBJECTIVES: Few studies in Africa have investigated the risk profile and course of loneliness in old age. This study examined the risk factors for onset and chronicity, as well as the predictors of recovery from loneliness in a large representative sample of community dwelling older Africans. METHODS/DESIGN: A household multistage probability sample of Nigerians who were 65 years or older was drawn from a geographical area with approximately 25 million population. Loneliness was measured using the 3-item University of California (UCLA) scale in 2007 and annually in 2008 and 2009. Social engagement, social network, and depression were evaluated using the WHO Composite International Diagnostic Interview. Respondents were also administered the 30-item Geriatric Depression Scale. Multivariate logistic regression models were used to explore for risk factors. Estimates of adjusted hazard ratios (HR) for recovery were derived with the discrete time version of the Cox regression model for time invariant explanatory variables. RESULTS: Of 1704 respondents, 1525 were free of loneliness, using the UCLA scale, in 2007. A total of 209 (18.8%) persons developed new onset of loneliness in 2008 and 2009. Depression (O.R = 2.9, 95% C.I = 1.3-6.7), unmarried status (OR = 2.1, 95% C.I = 1.2-3.9) and social isolation (OR = 1.8, 95% CI = 1.0-3.2) independently predicted loneliness onset. Baseline demographic, health, social, and lifestyle factors were not associated with a chronic course of loneliness. The overall recovery rate estimated over two years was 89.5% (95% CI = 75.3-106.4). Being male (HR = 1.3, 95% C.I = 1.0-1.6), ≥80 years (HR = 1.4, 95% CI = 1.2-1.8) and having good social engagement at baseline (HR = 1.5, 95% C. = 1.1-2.0) independently predicted recovery from loneliness. CONCLUSIONS: Over a 2-year period, nearly one in five community-dwelling Africans developed new onset loneliness in old age, with a similar proportion having a chronic course of the emotional experience. While depression and indices of social isolation at baseline were associated with onset, good social engagement predicted recovery from loneliness.