Table 7.
Binary and multivariate logistic regression of risk factors associated with placenta praevia in Tikur Anbessa Specialized Referral and Gandhi Memorial Hospitals, Ethiopia, 2018.
| Risk factors | Case N (303) |
Control N (303) |
COR (95% CI) | AOR (95% CI) | |
|---|---|---|---|---|---|
| Maternal age | 15-24 | 41 | 101 | 1.0 | 1.0 |
| 25-34 | 190 | 185 | 2.5 (1.67, 3.38)∗∗ | 2 (1.26, 3.04)∗ | |
| ≥35 | 72 | 17 | 10.4 (5.45, 19.80)∗∗ | 6.3 (3.20, 12.51)∗∗ | |
|
| |||||
| Parity | Nulliparous | 70 | 99 | 1.2 (.77, 1.78) | 1.5 (.98, 2.40) |
| Primiparous | 75 | 124 | 1.0 | 1.0 | |
| Multiparous | 158 | 80 | 3.2 (2.20, 4.84)∗∗ | 2.2 (1.46, 3.46)∗∗ | |
|
| |||||
| Previous history of C/S | Yes | 79 | 27 | 3.6 (2.25, 5.77)∗∗ | 2.7 (1.64, 4.58)∗∗ |
| No | 224 | 276 | 1.0 | 1.0 | |
|
| |||||
| Previous history of abortion | Yes | 94 | 56 | 2 (1.36, 2.90)∗ | 1.5 (.98, 2.25) |
| No | 209 | 247 | 1.0 | 1.0 | |
|
| |||||
| Previous molar pregnancy | Yes | 12 | 5 | 2.5 (.85, 7.06)∗ | 2.8 (.92, 8.49) |
| No | 291 | 298 | 1.0 | 1.0 | |
|
| |||||
| Previous IUFD | Yes | 9 | 5 | 1.8 (.604, 5.51)∗ | 1.2 (.35, 4.02) |
| No | 294 | 298 | 1.0 | 1.0 | |
COR: crude odds ratio; AOR: adjusted odds ratio; CI: confidence interval. ∗Statistically significant variables at P < 0.05. ∗∗Statistically significant variables at P < 0.001. Hosmer‐Lemeshow goodness‐of‐fit = 0.63.