Mental Health Problems Prior to and During Pregnancy by Postpartum Mental Health Status. Of the women with no postpartum mental health problems, 9.3% reported some history of poor mental health (4.8% reported poor pre-pregnancy mental health, 2.9% reported poor antepartum mental health, 1.6% reported both reported poor pre-pregnancy mental health and poor antepartum mental health), and 90.7% did not report any mental health problems during the study period. Of the women with postpartum mental health problems, 52.1% reported some history of poor mental health (9.6% reported poor pre-pregnancy mental health, 26.2% reported poor antepartum mental health, 16.3% reported both reported poor pre-pregnancy mental health and poor antepartum mental health), and 47.9% did not report any mental health problems during the study period.