Birth seat group | Control group | Crude | Adjusted | |||
---|---|---|---|---|---|---|
n= 253 | n= 697 | Odds Ratio | P-value | Odds Ratio | P-value | |
n (%) | n (%) | (95% CI) | (95% CI) | |||
Duration of labour | ||||||
First stage of labour in minutes* | 397 (± 191) | 465 (± 240) | 0.99 (0.99 - 0.99) | <0.01 | 0.99 (0.99 - 1.00) | <0.01 |
Second stage of labour in minutes** | 32 (± 18) | 44 (± 27) | 0.97 (0.70 - 0.98) | <0.01 | 0.97 (0.96 - 0.98) | <0.01 |
Third stage of labour in minutes*** | 14 (± 17) | 13 (± 14) | 1.00 (0.99 - 1.03) | 0.34 | 1.00 (0.99 - 1.01) | 0.22 |
Augmentation of labour | ||||||
No augmentation | 127 (50.2) | 202(28.9) | 1.0 Ref. | 1.0 Ref. | ||
Augmentation initiated during first stage of labour**** | 90 (35.6) | 355 (50.9) | 0.40 (0.29 - 0.56) | <0.01 | 0.74 (0.49 - 1.13) | 0.17 |
Augmentation initiated during second stage of labour***** | 36 (14.2) | 140 (20.1) | 0.66 (0.44 - 0.98) | 0.04 | 0.49 (0.29 - 0.86) | <0.01 |
Epidural analgesia****** | 94 (37.0) | 314 (45.0) | 0.72 (0.54 - 0.97) | 0.03 | 1.14 (0.75 - 1.73) | 0.54 |
Blood loss******* | ||||||
< 499 ml | 86 (34.0) | 355 (51.1) | 1.0 Ref. | 1.0 Ref. | ||
500-999 ml | 128 (50.6) | 246 (35.1) | 1.43 (1.22 - 1.68) | <0.01 | 2.20 (1.48 - 3.26) | <0.01 |
>1000 ml | 39 (15.4) | 96 (13.8) | 1.67 (1.08 - 2.60) | 0.02 | 2. 00 (1.19 - 3.37) | <0.01 |
Mean blood loss in ml. (SD)******* | 709 (± 462) | 592 (± 448) | 117 | <0.01 | 1.00 (1.00 - 1.01) | <0.01 |
Episiotomies******* | 5 (2.0) | 90 (13.7 ) | 0.15 (0.06 - 0.37) | <0.01 | 0.19 (0.07 - 0.54) | <0.01 |
Perineal lacerations******* | ||||||
No laceration | 10 (4.0) | 40 (6.1) | 1.0 Ref. | 1.0 Ref. | ||
1 degree | 184 (73.8) | 458 (69.8) | 1.06 (0.97 - 1.15) | 0.25 | 1.63 (0.70 - 3.80) | 0.26 |
2.degree | 42 (16.8) | 118 (17.9) | 1.93 (0.68 - 1.30) | 0.77 | 1.53 (0.60 - 3.89) | 0.37 |
3.degree | 13 (5.2) | 40 (6.1) | 0.85 (0.47 - 1.57) | 0.75 | 1.76 (0.60 - 5.29) | 0.31 |
Oedema******* | ||||||
1 (vas 0-3) | 184 (85.2) | 419 (83.4) | 1.0 Ref. | 1.0 Ref. | ||
2 (vas 4-7) | 30 (13.8) | 70 (13.9) | 0.99 (0.67 - 1.48) | 1.00 | 1.79 (0.35 - 8.77) | 0.51 |
3 (vas 8-10) | 2 (0.9) | 13 (2.6) | 0.35 (0.08 - 1.57) | 0.25 | 2.54 (0.48 - 13.64) | 0.28 |