“…Almost all of the studies met all of the PICOT criteria, even if there were some exceptions. Among the exceptions, only 9% of the included studies referred to older adults in the work of Gadais et al (2018) [ 31 ] and only six studies out of 27 in Cunningham and Michael (2004) [ 28 ]. Won et al (2016) [ 32 ] considered only neighborhood safety as influencing both health behaviors, such as physical activity and walking, and health outcomes, such as health status, mental health, physical function, and morbidity/mortality, which were excluded from our analysis that considered 16 out of 32 articles; Levasseur et al (2015) [ 30 ] also considered social participation and only 39 out of 50 were focused on mobility; Yen et al (2009) [ 33 ] considered various health outcomes, including mental health, health behaviors, morbidity and mortality, so only 7 out of 33 included studies analyzed physical activity as the outcome.…”