“… 19 , 22 , 24 , 25 , 30 , 32 Overall, half of the included studies specifically reported evidence about older adults aged 60 years and over. 20 , 21 , 23 , 24 , 29–31 , 34 , 37–39 Five studies reported evidence for populations aged 18 years and over 19 , 22 , 28 , 32 , 33 , 34 and a minority of studies reported evidence for all ages (0–60+), where we extracted outcomes for studies of population aged 18 years and over. 25 , 36 Some studies specifically looked at adults living in social or affordable housing, 19 , 21 , 22 , 25 , 36 hard-to-treat homes, 25 and/or those experiencing fuel poverty.…”