1 = ~30
2 = 30~34
3 = 35~

The length of time being married
1 = 0-4
2 = 5-9
3 = ≥10

Monthly household income
1 = ＜4000
2 = 4000-4999
3 = 5000-5999
4 = ≥6000

Employment status
1 = Employed
2 = Employed

1 = No
2 = Yes

Number of the previous miscarriages
1 = 2
2 = 3
3 = ≥4

Time from the last miscarriage(months)
1 = ≤ 6
2 = 7-12
3 = ＞12

Perceived childbearing importance
1 = Important
2 = Not important

1 = 0
2 = ≥1