Comparison between 0 and 7 weeks of pregnancy and 1 year after childbearing | ||||||
---|---|---|---|---|---|---|
All | No change | Changea | ORb | 95% CI | P-value | |
Mother’s age | ||||||
20’s | 50 | 22 | 28 | 1.00 | ||
30’s | 108 | 56 | 52 | 0.73 | 0.37–1.43 | 0.359 |
40’s | 6 | 3 | 3 | 0.79 | 0.14–4.28 | 0.78 |
Partner’s presence | ||||||
Yes | 161 | 79 | 82 | 1.00 | ||
No | 3 | 2 | 1 | 0.39 | 0.03–4.48 | 0.447 |
Number of children | ||||||
0 | 79 | 28 | 51 | 1.00 | ||
1 | 53 | 29 | 24 | 0.46 | 0.22–0.95 | 0.035 |
2 | 22 | 16 | 6 | 0.21 | 0.07–0.61 | 0.004 |
3 or over | 10 | 8 | 2 | 0.14 | 0.03–0.72 | 0.019 |
Type of employment | ||||||
Regular employee | 91 | 60 | 31 | 1.00 | ||
Non-regular employee | 73 | 21 | 52 | 5.07 | 2.57–10.01 | < 0.001 |
Mother’s education | ||||||
Junior high school | 4 | 2 | 2 | 1.00 | ||
High school | 42 | 18 | 24 | 1.27 | 0.16–9.95 | 0.821 |
Colleges of Technology | 0 | 0 | 0 | |||
Professional training colleges | 45 | 27 | 18 | 0.65 | 0.08–5.10 | 0.686 |
Junior college | 29 | 16 | 13 | 0.86 | 0.11–7.05 | 0.891 |
University | 40 | 15 | 25 | 1.74 | 0.22–13.79 | 0.599 |
Graduate school | 4 | 3 | 1 | 0.43 | 0.02–9.05 | 0.59 |
Household income | ||||||
< 2 million yen | 5 | 2 | 3 | 1.00 | ||
2.0–3.9 million yen | 56 | 19 | 37 | 1.33 | 0.20–8.65 | 0.768 |
4.0–5.9 million yen | 43 | 25 | 18 | 0.51 | 0.08–3.37 | 0.481 |
6.0–7.9 million yen | 28 | 17 | 11 | 0.46 | 0.07–3.26 | 0.438 |
8.0–9.9 million yen | 20 | 12 | 8 | 0.48 | 0.06–3.65 | 0.481 |
10–11.9 million yen, | 8 | 4 | 4 | 0.73 | 0.07–7.21 | 0.791 |
12–14.9 million yen | 2 | 1 | 1 | 0.78 | 0.03–21.94 | 0.884 |
15–19.9 million yen | 2 | 1 | 1 | 0.81 | 0.03–23.16 | 0.9 |
≥ 20 million yen | 0 | 0 | 0 |