Epidemiology and Outcomes Associated with Cognitive Frailty and Reserve in a Stroke Population: Systematic Review and Meta-Analysis.

Introduction: Cognitive frailty and the related concepts of cognitive reserve and imaging-based brain frailty are of increasing interest in older adult care. However, there is uncertainty regarding their importance within a stroke population. We aimed to establish the prevalence of cognitive frailty and reserve in stroke and determine impact on outcomes.

Global and regional estimates of COPD prevalence: Systematic review and meta-analysis.

Background: The burden of chronic obstructive pulmonary disease (COPD) across many world regions is high. We aim to estimate COPD prevalence and number of disease cases for the years 1990 and 2010 across world regions based on the best available evidence in publicly accessible scientific databases.

Methods: We conducted a systematic search of Medline, EMBASE and Global Health for original, population-based studies providing spirometry-based prevalence rates of COPD across the world from January 1990 to December 2014.

An estimate of the prevalence of hypertension in Nigeria: a systematic review and meta-analysis.

Background: Hypertension is a leading cause of morbidity and mortality in Africa, and Nigeria, the most populous country in the continent, hugely contributes to this burden.

Objective: To provide an improved estimate of the prevalence and number of cases of hypertension in Nigeria based on the cut-off 'at least 140/90  mmHg', towards ensuring better awareness, control and policy response in the country.

Methods: We conducted a systematic search of Medline, EMBASE and Global Health from January 1980 to December 2013 for population-based studies providing estimates on the prevalence of hypertension in Nigeria.

Estimating the prevalence and awareness rates of hypertension in Africa: a systematic analysis.

Background: The burden of hypertension is high in Africa, and due to rapid population growth and ageing, the exact burden on the continent is still far from being known. We aimed to estimate the prevalence and awareness rates of hypertension in Africa based on the cut off "≥140/90 mm Hg".

Methods: We conducted a systematic search of Medline, EMBASE and Global Health.

An estimate of the prevalence of COPD in Africa: a systematic analysis.

Background: Chronic obstructive pulmonary disease (COPD) is among the leading causes of death globally, accounting for about 3 million deaths worldwide in 2011. We aimed to estimate the prevalence of COPD in Africa in the year 2010 to provide the information that could assist health policy in the region.

Methods: We conducted a systematic review of Medline, EMBASE and Global Health for studies on COPD published between 1990 and 2012.