Table 4. Risk factors of postpartum hemorrhage in patients with placenta previa.
| B | Standard error | P | Exp (B) | 95% Confidence interval of Exp (B) | ||
|---|---|---|---|---|---|---|
| Lower limit | Upper limit | |||||
| Age | -0.012 | 0.026 | 0.639 | 0.988 | 0.939 | 1.039 |
| Number of uterine cavity operations | 0.188 | 0.184 | 0.309 | 1.207 | 0.841 | 1.732 |
| Number of caesarean sections | 0.227 | 0.286 | 0.427 | 1.255 | 0.717 | 2.196 |
| PAS disorders | 0.995 | 0.310 | 0.001 | 2.704 | 1.474 | 4.961 |
| Placental attachment site | 0.551 | 0.224 | 0.014 | 1.735 | 1.118 | 2.691 |
| Placenta previa types | 1.210 | 0.236 | 0.000 | 3.354 | 2.112 | 5.327 |
| Frequency of abortion | -0.112 | 0.177 | 0.529 | 0.894 | 0.631 | 1.266 |
| Constant | -2.056 | 0.833 | 0.014 | 0.128 | ||