Characteristics of resuscitation in delivery room
| Gestational weeks | Group 1, n/N (%) | Group 2, n/N (%) | p Value | Group 1, OR (95% CI) | Group 2, OR (95% CI) | Group 1, aOR (95% CI)* | Group 2, aOR (95% CI)* |
|---|---|---|---|---|---|---|---|
| Oxygen treatment | |||||||
| Total | 967/2483 (38.9) | 566/2555 (22.1) | <0.001 | 1 [reference] | 0.44 (0.39 to 0.50) | 1 [reference] | 0.38 (0.34 to 0.44) |
| 37 | 138/373 (37.0) | 117/369 (31.7) | 0.12 | 1 [reference] | 0.79 (0.58 to 1.07) | 1 [reference] | 0.72 (0.52 to 1.00) |
| 38 | 278/654 (42.5) | 151/713 (21.8) | <0.001 | 1 [reference] | 0.36 (0.28 to 0.46) | 1 [reference] | 0.32 (0.24 to 0.41) |
| 39 | 247/737 (33.5) | 139/723 (19.2) | <0.001 | 1 [reference] | 0.47 (0.37 to 0.59) | 1 [reference] | 0.42 (0.32 to 0.54) |
| 40 | 235/549 (42.8) | 111/568 (19.5) | <0.001 | 1 [reference] | 0.32 (0.24 to 0.42) | 1 [reference] | 0.28 (0.20 to 0.37) |
| 41 | 69/170 (40.5) | 48/182 (26.3) | 0.004 | 1 [reference] | 0.52 (0.33 to 0.82) | 1 [reference] | 0.41 (0.25 to 0.67) |
| Face mask CPAP | |||||||
| Total | 43/2483 (1.7) | 285/2555 (11.1) | <0.001 | 1 [reference] | 7.12 (5.20 to 9.99) | 1 [reference] | 7.02 (5.08 to 9.93) |
| 37 | 6/373 (1.6) | 63/369 (17.0) | <0.001 | 1 [reference] | 12.59 (5.82 to 32.98) | 1 [reference] | 12.48 (5.56 to 33.78) |
| 38 | 10/654 (1.5) | 74/713 (10.3) | <0.001 | 1 [reference] | 7.45 (4.00 to 15.49) | 1 [reference] | 7.80 (4.12 to 16.40) |
| 39 | 8/737 (1.0) | 70/723 (9.6) | <0.001 | 1 [reference] | 9.76 (4.95 to 22.16) | 1 [reference] | 10.16 (5.04 to 23.48) |
| 40 | 14/549 (2.5) | 56/568 (9.8) | <0.001 | 1 [reference] | 4.17 (2.36 to 7.89) | 1 [reference] | 4.43 (2.38 to 8.84) |
| 41 | 5/170 (2.9) | 22/182 (12.0) | 0.001 | 1 [reference] | 4.53 (1.80 to 13.80) | 1 [reference] | 3.81 (1.44 to 12.08) |
| Bag-and-mask ventilation | |||||||
| Total | 58/2483 (2.3) | 79/2555 (3.0) | 0.09 | 1 [reference] | 1.33 (0.94 to 1.88) | 1 [reference] | 1.10 (0.75 to 1.62) |
| 37 | 7/373 (1.8) | 12/369 (3.2) | 0.23 | 1 [reference] | 1.75 (0.69 to 4.76) | 1 [reference] | 2.19 (0.75 to 7.18) |
| 38 | 17/654 (2.6) | 13/713 (1.8) | 0.32 | 1 [reference] | 0.69 (0.32 to 1.43) | 1 [reference] | 0.34 (0.11 to 0.89) |
| 39 | 18/737 (2.4) | 30/723 (4.1) | 0.06 | 1 [reference] | 1.72 (0.96 to 3.18) | 1 [reference] | 1.44 (0.71 to 2.97) |
| 40 | 13/549 (2.3) | 15/568 (2.6) | 0.77 | 1 [reference] | 1.11 (0.52 to 2.40) | 1 [reference] | 0.95 (0.40 to 2.30) |
| 41 | 3/170 (1.7) | 9/182 (4.9) | 0.10 | 1 [reference] | 2.89 (0.84 to 13.21) | 1 [reference] | 3.74 (0.89 to 25.48) |
Adjusted confounders. *Maternal age, multipara, multiple births, abruptio placentae, meconium staining of the amniotic fluid, caesarean section, labour induction, epidural labour analgesia, low Apgar score at 5 min (≤7), low birth weight (<2500 g).aOR, adjusted OR; CPAP, continuous positive airway pressure.