Table 5 Logistic multivariate regression analyses of factors associated with secondary infertility
From: Prevalence and associated factors of infertility among 20–49 year old women in Henan Province, China
Characteristic | p-value | Unadjusted OR (95% CI) | p-value | Adjusted OR (95%CI) |
|---|---|---|---|---|
History of gynecological surgery | ||||
No | Ref | Ref | ||
Yes | < 0.001 | 2.937 (1.772–4.870) | < 0.001 | 2.695 (1.548–4.695) |
DOR | ||||
No | Ref | Ref | ||
Yes | < 0.001 | 3.690 (1.913–7.114) | 0.002 | 3.145 (1.532–6.455) |
WHR | ||||
≤ 0.85 | Ref | Ref | ||
> 0.85 | 0.027 | 0.637(0.428–0.950) | 0.043 | 0.650 (0.428–0.987) |
Delivery times | ||||
< 0.001 | 0.001 | |||
0 | Ref | Ref | ||
1 | < 0.001 | 3.987 (2.250–7.064) | < 0.001 | 3.247 (1.753–6.015) |
2 | 0.019 | 2.112 (1.134–3.936) | 0.097 | 1.772 (0.902–3.484) |
3 | 0.003 | 4.182 (1.606–10.888) | 0.025 | 3.220 (1.160–8.939) |
Age (year) | ||||
< 0.001 | < 0.001 | |||
20–29 | Ref | Ref | ||
30–39 | < 0.001 | 4.175(2.357–7.394) | < 0.001 | 3.359 (1.827–6.174) |
40–49 | 0.002 | 2.924(1.481–5.773) | 0.036 | 2.170 (1.052–4.479) |
Constant | < 0.001 | 0.039 | ||