Summary Background Sub-Saharan Africa has the highest incidence, prevalence, and fatality from stroke globally. Yet, only little information about context-specific risk factors for prioritising interventions to reduce the stroke burden in sub-Saharan Africa is available. We aimed to identify and characterise the effect of the top modifiable risk factors for stroke in sub-Saharan Africa. Methods The Stroke Investigative Research and Educational Network (SIREN) study is a multicentre, case-control study done at 15 sites in Nigeria and Ghana. Cases were adults (aged ≥18 years) with stroke confirmed by CT or MRI. Controls were age-matched and gender-matched stroke-free adults (aged ≥18 years) recruited from the communities in catchment areas of cases. Comprehensive assessment for vascular, lifestyle, and psychosocial factors was done using standard instruments. We used conditional logistic regression to estimate odds ratios (ORs) and population-attributable risks (PARs) with 95% CIs. Findings Between Aug 28, 2014, and June 15, 2017, we enrolled 2118 case-control pairs (1192 [56%] men) with mean ages of 59.0 years (SD 13.8) for cases and 57.8 years (13.7) for controls. 1430 (68%) had ischaemic stoke, 682 (32%) had haemorrhagic stroke, and six (<1%) had discrete ischaemic and haemorrhagic lesions. 98.2% (95% CI 97.2–99.0) of adjusted PAR of stroke was associated with 11 potentially modifiable risk factors with ORs and PARs in descending order of PAR of 19.36 (95% CI 12.11–30.93) and 90.8% (95% CI 87.9–93.7) for hypertension, 1.85 (1.44–2.38) and 35.8% (25.3–46.2) for dyslipidaemia, 1.59 (1.19–2.13) and 31.1% (13.3–48.9) for regular meat consumption, 1.48 (1.13–1.94) and 26.5% (12.9–40.2) for elevated waist-to-hip ratio, 2.58 (1.98–3.37) and 22.1% (17.8–26.4) for diabetes, 2.43 (1.81–3.26) and 18.2% (14.1–22.3) for low green leafy vegetable consumption, 1.89 (1.40–2.54) and 11.6% (6.6–16.7) for stress, 2.14 (1.34–3.43) and 5.3% (3.3–7.3) for added salt at the table, 1.65 (1.09–2.49) and 4.3% (0.6–7.9) for cardiac disease, 2.13 (1.12–4.05) and 2.4% (0.7–4.1) for physical inactivity, and 4.42 (1.75–11.16) and 2.3% (1.5–3.1) for current cigarette smoking. Ten of these factors were associated with ischaemic stroke and six with haemorrhagic stroke occurrence. Interpretation Implementation of interventions targeting these leading risk factors at the population level should substantially curtail the burden of stroke among Africans. Funding National Institutes of Health.
Background and Objectives Limited access to medicines can impact negatively on outcomes in people with Parkinson's disease (PD). The study objectives were to determine the availability and assess the affordability of antiparkinsonian medications in pharmacies across Nigeria. Methods This was a cross‐sectional nationwide study utilizing the World Health Organization/Health Action Initiative methodology. Strategically selected private‐ and public‐sector pharmacies in the six geopolitical zones of Nigeria were surveyed for availability of medicines for management of early and advanced PD. The nine categories were: levodopa/peripheral decarboxylase inhibitors, dopamine receptor agonists, monoamine oxidase type B inhibitors, anticholinergics, catechol‐o‐methyl transferase inhibitors, atypical antipsychotics, antidepressants, antidementia drugs, and miscellaneous (e.g., drugs for orthostatism, urinary incontinence, and sleep disturbance). Unaffordability was defined as paying more than 1 days' wages (>N600 or > US$1.67) for a standard 30‐day supply. Results One hundred twenty‐three pharmacies were surveyed (62 private [50.4%] and 61 public sector [49.6%]; range of 15–25 pharmacies in each geopolitical zone). Private exceeded public‐sector availability across all nine categories of PD medicines (P < 0.05). The most available medicines were dopamine receptor agonists (68.3%; predominantly ergot‐derived bromocriptine), anticholinergics (56.1%; mainly trihexyphenidyl), and l‐dopa formulations (48%; mainly 250/25 l‐dopa/carbidopa). Only two medications (trihexyphenidyl tablets and biperiden injection) were affordable. The average number of day's minimum wages for a 30‐day supply of PD medicines was 41.3 days (range, 1–371). Conclusions PD medicines access is limited in Nigeria. Strategies, including engagement of stakeholders to consider interventions to improve and prioritize PD medicines access, are urgently warranted.
Prompt diagnosis and appropriate treatment for febrile diseases and CNS infections, use of head helmets and car seat belts would contribute to reduced incidence.
Background Africa has a growing burden of stroke with associated high morbidity and a 3-year fatality rate of 84%. Cardiac disease contributes to stroke occurrence and outcomes, but the precise relationship of abnormalities as noted on a cheap and widely available test, the electrocardiogram (ECG), and acute stroke outcomes has not been previously characterized in Africans. We assessed the prevalence and prognoses of various ECG abnormalities among African acute stroke patients encountered in a multisite, cross-national epidemiologic study. Methods We included 890 patients from Nigeria and Ghana with acute stroke who had 12-lead ECG recording within first 24 hours of admission and stroke classified based on brain CT scan or MRI. Stroke severity at baseline was assessed using the Stroke levity scale (SLS), while one-month outcome was assessed using the modified Rankin scale (mRS). Results Patients mean age was 58.4 (±13.4) years, 490 were male (55%) and 400(45%) females, 65.5% had ischemic stroke, and 85.4% had at least one ECG abnormality. Women were significantly more likely to have atrial fibrillation, or left ventricular hypertrophy (LVH) with or without strain pattern. Compared to ischemic stroke patients, hemorrhagic stroke patients were less likely to have atrial fibrillation (1.0% vs. 6.7%, p=0.002), but more likely to have LVH (64.4% vs. 51.4%, p=0.004). Odds of severe disability or death at one month was higher with severe stroke (AOR: 2.25; 95% CI :1.44–3.50), or atrial enlargement (AOR: 1.45; CI:1.04–2.02). Conclusions About four in five acute stroke patients in this African cohort had evidence of a baseline ECG abnormality, but presence of any atrial enlargement was the only independent ECG predictor of death or disability.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.