Facilitators and barriers for recruiting and engaging hard-to-reach older people to health promotion interventions and related research: a systematic review

Background Older people from particular groups engage less in health promotion interventions and related research, potentially generating inequities. This review aimed to identify barriers and facilitators to participation in health promotion interventions or health promotion-related research in groups of older people known to participate less. Methods We focused on older people from black and minority ethnic groups, older people in deprived areas, and those aged 85 years and older (oldest-old). We searched Medline, Cochrane Library, SCOPUS, Embase, PsychINFO, SSCI, CINAHL, and SCIE databases (Jan 1, 1990, to Dec 31, 2014) to identify eligible studies reporting facilitators and barriers of recruiting or engaging any of the three groups in health interventions or health promotion-related research (see appendix for search terms). Eligible study designs included surveys, qualitative interviews and focus groups, and mixed methods. Recruitment and engagement strategies reported were identified and analysed thematically for each group. Themes were identified by two researchers independently and agreed with the team. Findings 34 studies (three with oldest-old, 24 with black and minority ethnic groups, five within deprived areas, one with both oldest-old and black and minority ethnic groups, one with both oldest-old and deprived areas) were included. Half of studies reported mainly on recruitment; half on engagement. 16 studies focused on participation in interventions; 18 studies were on participation in related research. Facilitators for recruiting in deprived areas included targeting social aspects of participation and providing a personalised approach. Similarly, building trust was important for recruitment from black and minority ethnic groups and oldest-old. Facilitators for engaging black and minority ethnic groups included involving community leaders and recruitment during existing activities; for the oldest-old gaining family support was important. Facilitators across all groups included use of incentives and well-targeted advertising. Barriers among black and minority ethnic groups included fear of falling, poor knowledge of benefits, lack of self-confidence, family responsibilities, and cultural barriers (language, mixed-sex sessions, religious practices). Barriers among the oldest-old included tiredness and feeling too old for preventive health care. Negative social interaction with research staff was a barrier identified in deprived areas only. Barriers across all groups were lack of motivation, deteriorating health, costs, and lack of transportation. Interpretation This review has identified numerous facilitators and barriers for recruiting and engaging hard-to-reach older people in health promotion interventions and related research; these include specific facilitators and barriers for particular groups, which should be considered in practice. Funding This study was funded by the National Institute for Health Research (NIHR). AL is funded by the NIHR School for Public Health Research.