supplemental oxygen No. (%) | surfactant No. (%) | antenatal steroids No. (%) | ||||
---|---|---|---|---|---|---|
1996-2008 1 | 1933 (64.8) | 972 (32.6) | 2311 (77.5) | |||
19961 | 472 (67.2) | 174 (24.8) | 475 (67.7) | |||
20001 | 489 (65.2) | 221 (29.5) | 508 (67.7) | |||
20041 | 492 (67.6) | 255 (35.0) | 594 (81.6) | |||
20081 | 480 (59.8) | 322 (40.1) | 734 (91.4) | |||
p-value 1996-2008 | < 0.001 | < 0.001 | < 0.001 | |||
No. (%) | p-value | No. (%) | p-value | No. (%) | p-value | |
Gender | ||||||
- female | 922 (63.1) | 0.77 | 435 (29.8) | 0.50 | 1132 (77.4) | 0.99 |
- male | 1011 (66.5) | 537 (35.3) | 1179 (77.5) | |||
Location of birth | ||||||
- inborn2 | 1728 (64.0) | 0.48 | 865 (32.0) | 0.49 | 2144 (79.4) | 0.08 |
- outborn | 205 (72.2) | 107 (37.7) | 167 (58.8) | |||
Mode of delivery3 | ||||||
- spontaneous | 327 (62.0) | 0.76 | 141 (26.8) | 0.38 | 392 (74.4) | 0.71 |
- caesarean section | 1537 (65.5) | 789 (33.6) | 1852 (78.9) | |||
Number of infants | ||||||
- singleton | 1387 (67.2) | 0.49 | 722 (35.0) | 0.49 | 1525 (73.8) | 0.35 |
- multiples | 546 (59.5) | 250 (27.2) | 786 (85.6) | |||
Gestational age4 | ||||||
< 26 | 234 (88.0) | 167 (62.8) | 201 (75.6) | |||
26-27 | 435 (89.5) | 286 (58.8) | 377 (77.6) | |||
28-29 | 534 (78.0) | 261 (38.1) | 536 (78.2) | |||
30-31 | 234 (20.8) | 234 (20.8) | 903 (80.3) |