Method 110 cases of home follow-up for the single birth primiparas were set as home visit group and 110 cases of single birth primiparas without home follow-up were set as control group.

• 方法将110例单胎出院进行家庭探访的初产妇设为家访组，将过去未做家庭探访，只做电话随访的110例单胎初产妇设为对照组。