“…The variance could be attributed to the high representation of mothers with a previous history of depression in one study (Cryan et al, 2001) and mothers with single status in another (Greene et al, 1991). Nevertheless, the most recently published study compares well with similar rates at 14.4% at 6 weeks (Crotty & Sheehan, 2004). Previous international researches have reported similar rates at 6 weeks (Gao, Chan, & Mao, 2008) and varying rates from 11.2% at 8 weeks (Eisenach et al, 2008) to 10.4% at 9 weeks (O' Hara, Zekoski, Phillips, & Wright, 1990) to 23.3% at 14 weeks (Stuart, Couser, Schilder, O'Hara, & Gorman, 1998) and 29.9% between 6 and 24 weeks (Ege, Timur, Zincir, Geçkil, & SunarReeder, 2008).…”