“…The ethnicity of the remaining 18.6% (n = 1219) of participants was unknown. A total of 27 studies [20][21][22]24,25,27,28,[31][32][33]35,37,40,[42][43][44][45][46][48][49][50][51][53][54][55]57,58 reported the marital status of their participants (n = 4161): approximately half were not married (51%, n = 2121), 38% (n = 1582) were married and the marital status of the remaining 11% (n = 461) was unknown. Over half of the studies 19,20,[23][24][25][26][27][28]31,35,41,[44][45][46]48,50,51,53,[55][56][57][58] (n = 3103) reported participants' living situation: 53.5% ...…”