Gender differences were greatest in women who had no PND.
未患PND的女性中性别差异最大。
2
It found that 17% of mothers who had a multiple birth experienced PND, compared with an average of 10% among all mothers.
这个调查显示：所有的母亲中患产后抑郁症的平均几率是10%，但是生过多胞胎的母亲却高达17%。
3
Some harmed themselves and others contemplated suicide. The survey found that mothers who suffered PND reported less sleep and less help from family and friends than non-sufferers.