Table 2.
The relationship between LnNT-proBNP7 and late discharge and subgroup analysis.
| Group | N | Adjusted odds ratio (95% CI) | p- value for trend | p- value for interaction | ||
|---|---|---|---|---|---|---|
| LnNT-proBNP7 tertile | ||||||
| T1 | T2 | T3 | ||||
| All infants | 703 | 1.0 (reference) | 1.4 (0.8, 2.4) | 8.4 (4.8, 14.9) | <0.001 | |
| Gender | 0.6618 | |||||
| Female | 325 | 1.0 (reference) | 1.6 (0.7, 3.8) | 10.0 (4.1, 24.7) | <0.001 | |
| Male | 378 | 1.0 (reference) | 1.3 (0.6, 2.8) | 7.7 (3.6, 16.6) | <0.001 | |
| Gestational age, weeks | 0.5549 | |||||
| 28–28+6 | 84 | 1.0 (reference) | 0.4 (0.0, 7.8) | 8.2 (0.9, 76.3) | 0.004 | |
| 29–29+6 | 155 | 1.0 (reference) | 2.0 (0.5, 8.0) | 7.3 (2.0, 26.7) | <0.001 | |
| 30–30+6 | 193 | 1.0 (reference) | 1.2 (0.5, 2.8) | 17.9 (6.5, 48.9) | <0.001 | |
| 31–31+6 | 271 | 1.0 (reference) | 1.3 (0.7, 2.4) | 9.6 (5.3, 17.3) | <0.001 | |
| Small for gestational age | 0.1023 | |||||
| Yes | 176 | 1.0 (reference) | 1.2 (0.5, 2.9) | 4.8 (1.8, 13.0) | <0.001 | |
| No | 527 | 1.0 (reference) | 1.4 (0.6, 3.4) | 15.7 (7.0, 35.4) | <0.001 | |
| Embryo transfer | 0.08 | |||||
| Yes | 105 | 1.0 (reference) | 0.3 (0.0, 2.0) | 16.1 (2.1, 121.6) | 0.002 | |
| No | 598 | 1.0 (reference) | 1.5 (0.8, 2.8) | 10.0 (5.2, 19.0) | <0.001 | |
| Maternal age, years | 0.7470 | |||||
| ≤ 35 | 571 | 1.0 (reference) | 1.2 (0.7, 2.4) | 9.5 (5.0, 18.1) | <0.001 | |
| >35 | 131 | 1.0 (reference) | 1.6 (0.3, 8.3) | 17.0 (3.1, 91.5) | <0.001 | |
| Mode of delivery | 0.3443 | |||||
| Vaginal delivery | 140 | 1.0 (reference) | 1.2 (0.2, 6.3) | 22.1 (5.0, 96.8) | <0.001 | |
| Cesarean section | 562 | 1.0 (reference) | 1.5 (0.8, 2.8) | 9.1 (4.6, 17.9) | <0.001 | |
| Maternal with gestational hypertension | 0.5704 | |||||
| Yes | 287 | 1.0 (reference) | 1.2 (0.6, 2.7) | 7.8 (3.2, 18.9) | <0.001 | |
| No | 416 | 1.0 (reference) | 1.4 (0.6, 3.5) | 13.9 (5.8, 32.9) | <0.001 | |
| Mechanical ventilation history | 0.3624 | |||||
| Yes | 495 | 1.0 (reference) | 1.6 (0.5, 5.3) | 6.7 (2.2, 20.0) | <0.001 | |
| No | 208 | 1.0 (reference) | 1.2 (0.6, 2.3) | 13.1 (6.3, 27.5) | <0.001 | |
Adjusted birth weight, gestational age, small for gestational age, mechanical ventilation in the first week, PDA at day 7, creatine level in plasma at day 7, and hypertension during pregnancy.