Women having more than 3 live births were 5 times and women having 2 live births were 2.7 times as likely to have abnormal cervical cytology tests as women never giving birth.
Phụ nữ sinh từ 3 con trở lên có tỷ lệ bất thường tế bào gấp 5,0 lần chưa sinh con, phụ nữ sinh 2 con gấp 2,7 lần chưa sinh con.