Type of intervention: CHW interventions focussed on health-related outcomes.
Type of studies: randomised controlled trials (RCTs) that compared a CHW arm against a control arm receiving either usual care, no intervention, or another intervention.
Target population: ethnic minority older adults (50 years and over). Studies in which ethnic minority older adults were at least 70% of the total sample or in which the results were specified for ethnic older adults. The minimum age was set to 50 because adults belonging to ethnic minority groups often experience health problems at a younger age than the majority population.
Type of CHW: paid or voluntary, carried out functions associated with health care delivery,
involved in reaching and serving hard-to-reach and underserved ethnic minorities, not a formally trained health care professional, and not an extender of the formal health care system.
Outcomes: outcomes related to health and delivery of health care services.
Setting: studies conducted in Western countries. Western countries were limited to Europe, the US,Canada, Australia, and New Zealand because these countries currently host a growing number of aging adults belonging to ethnic minorities.
Time period: studies published in the last ten years. The time period was limited to the last ten years to include recently conducted studies