Table 3b.

Method of quality assessment of included studies (BSA Medical Sociology)

Author and year	Appropriate research design? (Y/N)	Appropriate recruitment strategy? (Y/N)	Response rate? (Y/N)%	Is sample representative? (All similar populations) (Y/N)	Objective and reliable measures? (Y/N)	Power calculation/justification of numbers? (Y/N)	Appropriate statistical analysis? (Y/N)	Quality indicators Met (out of 7)
Clover (1999)[13]	YES	YES	YES	NO	YES	NO	YES	5
Albert et al. (2002)[14]	YES	YES	NO	NO	YES	NO	YES	4
Johnson et al. (2006)[15]	YES	YES	YES	NO	YES	NO	YES	5
Bhat et al. (2013)[12]	YES	YES	YES	N0	YES	NO	YES	5
Awan et al. (2015)[16]	YES	YES	YES	NO	YES	NO	YES	5
Razavi et al. (2015)[17]	YES	YES	YES	NO	YES	NO	YES	5
Keogan et al. (2015)[18]	YES	YES	NO	NO	YES	NO	YES	4
Duparea et al. (2015)[5]	YES	YES	YES	NO	YES	NO	YES	5
Bangera et al. (2018)[19]	YES	YES	YES	NO	YES	NO	YES	5