“…Practicalities/responsibilities [24, 26–28, 31, 40, 42, 45, 52, 76] were the most cited factors assigned to the cluster “Social and material resources.” The cluster also consisted of time constraints [5, 27, 29, 31, 39, 40, 50], occupation [31, 39, 47, 67, 72], education [30, 39, 63, 67], financial limitations [5, 21, 39, 67], lack of parental time [24, 34, 41], taking time from family and gender role activities [5, 22, 31], and income [35, 47, 77]. The remaining four factors were only reported in one or two studies.…”