No other risk factor | 0.8% | 1.4% | 0.2% | 0.1% | 0.1% | 0.1% | 0.1% |
+Oliogohydramnios | 2.7% | 4.7% | | 0.4% | 0.4% | 0.4% | 0.2% |
+High birthweight | 1.9% | 3.4% | | | 0.3% | 0.3% | 0.2% |
+Primipara | 1.8% | 3.1% | | | | 0.2% | 0.2% |
+Age 35+ | 1.7% | 3.0% | | | | | 0.1% |
+Postmaturity | 1.1% | 2.0% | | | | | |
+Oligohydramnios +high birthweight | 6.5% | 10.8% | | | 0.9% | 0.9% | 0.6% |
+Oligohydramnios +primipara | 6.0% | 10.0% | | | | 0.8% | 0.5% |
+High birthweight +primipara | 4.3% | 7.3% | | | | 0.6% | 0.4% |
+Age 35+ +postmaturity | 2.4% | 4.1% | 0.5% | 0.4% | 0.3% | | |
+Oligohydramnios +age 35+ | 5.7% | 9.6% | | | | | |
+Oligohydramnios +postmaturity | 3.8% | 6.5% | | | | | |
+High birthweight +age 35+ | 4.1% | 6.9% | | | | | |
+High birthweight +postmaturity | 2.7% | 4.7% | | | | | |
+Primipara +age 35+ | 3.8% | 6.4% | | | | | |
+Primipara, +postmaturity | 2.5% | 4.3% | | | | | |