total VBAC group (n = 139) | VBAC group A (n = 109) | VBAC group B (n = 30) | Primipara Control group (n = 149) | Multipara Control group (n = 155) | P values | |||||
---|---|---|---|---|---|---|---|---|---|---|
pa | pb | pc | pd | pe | ||||||
The first stage of labor (min) | 390 (240, 660) | 405 (242, 657) | 304 (240, 770) | 630 (377, 847.5) | 380 (260, 530) | 0.001 | 0.378 | 0.001 | 0.764 | 0.411 |
The second stage of labor (min) | 39 (15, 83) | 39 (14, 77) | 48 (26, 98) | 72 (42, 113.5) | 15 (9, 43) | 0.001 | 0.001 | 0.001 | 0.001 | 0.206 |
The third stage of labor (min) | 5 (4, 7) | 5 (4, 7) | 5 (3, 6) | 5 (4, 8) | 6 (5, 10) | 0.378 | 0.001 | 0.671 | 0.002 | 0.283 |
The total stage of labor (min) | 453 (267, 739) | 479 (268, 733) | 404 (264, 801) | 703 (472, 941.5) | 435 (280, 600) | 0.001 | 0.230 | 0.001 | 0.895 | 0.610 |