“…The remaining 13 studies were cross-sectional general population surveys and were eligible because the sample was segmented by a socio economic indicator with findings reporting potential barriers or facilitators for the lowest category of the socio-demographic indicator. Eight studies reported findings by education level, 28,30,33,34,44–46 six by employment status or social class, 27,28,31,32,33,40 four by household income, 30,40,45,46 and one by neighbourhood income. 35 (Some studies reported by more than one indicator.…”