Table 4.
Development of EmCS risk scoring system
| EmCS risk scoring system (scores） | N (%) | NVD (n, %) | EmCS (n, %) | P value* | Or (95% CI) | P value† |
| Grade 1 (0–3 points) | 919 (8.93) | 907 (9.75) | 12 (1.21) | <0.001 | Ref | |
| Grade 2 (4–5 points) | 3389 (32.92) | 3302 (35.49) | 87 (8.78) | 1.991 (1.084 to 3.658) | 0.026 | |
| Grade 3 (6–7 points) | 2605 (25.30) | 2453 (26.37) | 152 (15.34) | 4.684 (2.589 to 8.471) | <0.001 | |
| Grade 4 (8–9 points) | 1686 (16.38) | 1451 (15.59) | 235 (23.71) | 12.241 (6.813 to 21.994) | <0.001 | |
| Grade 5 (10–11 points) | 938 (9.11) | 734 (7.89) | 204 (20.58) | 21.007 (11.641 to 37.906) | <0.001 | |
| Grade 6 (≥12 points) | 758 (7.36) | 457 (4.91) | 301 (30.38) | 49.782 (27.656 to 89.611) | <0.001 | |
*Chi square tests were used.
†Logistic regression analysis was used.
EmCS, emergency cesarean section; HDP, hypertensive disorders of pregnancy; NVD, normal vaginal delivery; Ref, reference category.