Table 2.
Detailed outcomes of the 1320 preterm infants evaluated by the Apgar score at 5 min in groups stratified by gestational age, birthweight and delivery mode
| Gestational age Birthweight |
Group | N | 25% quantile | Mean | Median | 75% quantile | p-value* | Outcome |
|---|---|---|---|---|---|---|---|---|
| 23 + 0–24 + 6 LGA | C.S. | 7 (58%) | 7.5 | 8 | 8 | 9 | 0.61 | Moderate |
| 23 + 0–24 + 6 LGA | Vaginal | 5 (42%) | 5 | 6.4 | 8 | 9 | Moderate | |
| 23 + 0–24 + 6 AGA | C.S. | 46 (35%) | 6 | 6.8 | 8 | 8 | <0.01 | Moderate |
| 23 + 0–24 + 6 AGA | Vaginal | 85 (65%) | 1 | 3.5 | 1 | 7 | Bad | |
| 23 + 0–24 + 6 SGA | C.S. | 6 (40%) | 1.5 | 4.7 | 4.5 | 7.5 | 0.17 | Bad |
| 23 + 0–24 + 6 SGA | Vaginal | 9 (60%) | 1 | 2.7 | 1 | 6 | Bad | |
| 25 + 0–27 + 6 LGA | C.S. | 19 (68%) | 8 | 7.5 | 8 | 9 | 0.41 | Moderate |
| 25 + 0–27 + 6 LGA | Vaginal | 9 (32%) | 1 | 6 | 8 | 9 | Moderate | |
| 25 + 0–27 + 6 AGA | C.S. | 188 (82%) | 8 | 8.1 | 8 | 9 | 0.03 | Moderate |
| 25 + 0–27 + 6 AGA | Vaginal | 40 (18%) | 7.8 | 7.5 | 8 | 9 | Moderate | |
| 25 + 0–27 + 6 SGA | C.S. | 26 (90%) | 7.2 | 7.8 | 8 | 9 | <0.01 | Moderate |
| 25 + 0–27 + 6 SGA | Vaginal | 3 (10%) | 0.5 | 2 | 1 | 3 | Bad | |
| 28 + 0–30 + 6 LGA | C.S. | 27 (71%) | 4 | 6.8 | 8 | 9 | 0.15 | Moderate |
| 28 + 0–30 + 6 LGA | Vaginal | 11 (29%) | 8 | 8.3 | 9 | 10 | Good | |
| 28 + 0–30 + 6 AGA | C.S. | 239 (85%) | 8 | 8.3 | 9 | 9 | 0.20 | Good |
| 28 + 0–30 + 6 AGA | Vaginal | 42 (15%) | 8 | 8.5 | 9 | 9 | Good | |
| 28 + 0–30 + 6 SGA | C.S. | 31 (94%) | 8 | 8 | 8 | 9 | 0.02 | Moderate |
| 28 + 0–30 + 6 SGA | Vaginal | 2 (6%) | 0 | 0 | 0 | 0 | Bad | |
| 31 + 0–33 + 6 LGA | C.S. | 37 (69%) | 8 | 8.6 | 9 | 9 | 0.11 | Good |
| 31 + 0–33 + 6 LGA | Vaginal | 17 (31%) | 8 | 8.5 | 10 | 10 | Good | |
| 31 + 0–33 + 6 AGA | C.S. | 290 (70%) | 8 | 8.7 | 9 | 10 | 0.02 | Good |
| 31 + 0–33 + 6 AGA | Vaginal | 127 (30%) | 9 | 9 | 9 | 10 | Good | |
| 31 + 0–33 + 6 SGA | C.S. | 54 (100%) | 8 | 8.6 | 9 | 9 | n/a | Moderate |
| 31 + 0–33 + 6 SGA | Vaginal | 0 (0%) | – | – | – | – | – |
C.S. cesarean section, LGA/AGA/SGA large/appropriate/small for gestational age, N number of observations (percentage within the stratum of cesarean section or vaginal delivery mode), n/a not available
* p-value from a Wilcoxon rank-sum test for comparison of Apgar score at 5 min between the delivery groups