Characteristics of 877 778 children born in Denmark between 1 January 1996 and 31 December 2009 according to prenatal exposure to corticosteroids
| Characteristics | Exposed to corticosteroids during pregnancy, n (%) | Not exposed to corticosteroids during pregnancy, n (%) |
|---|---|---|
| Exposure period | ||
| Corticosteroid use 30 days prior to conception | 2246 (7.1) | |
| Exposure during first trimester | 7297 (23.0) | |
| Exposure during second and third trimester | 22 216 (70.0) | |
| Gestational age (weeks) | ||
| 19–29 | 96 (0.3) | 2918 (0.3) |
| 30–36 | 1402 (4.4) | 37 965 (4.5) |
| 37–41 | 27 686 (87.2) | 736 254 (87.0) |
| 42–48 | 2418 (7.6) | 63 202 (7.5) |
| Missing | 157 (0.5) | 5680 (0.7) |
| Mode of delivery | ||
| Caesarean section | 6717 (21.2) | 148 607 (17.6) |
| Respiratory distress syndrome | 1218 (3.8) | 29 910 (3.5) |
| Apgar score | ||
| <7 | 206 (0.7) | 5828 (0,7) |
| 7–9 | 2136 (6.7) | 55 853 (6.6) |
| 10 | 29 114 (91.7) | 774 315 (91.5) |
| Missing | 303 (1.0) | 10 023 (1.2) |
| Birth weight (g) | ||
| 1500–2000 | 207 (0.7) | 6003 (0.7) |
| 2000–2499 | 687 (2.2) | 18 565 (2.2) |
| 2500–2999 | 2956 (9.3) | 86 449 (10.2) |
| 3000–5000 | 27 567 (86.8) | 723 099 (85.5) |
| Missing | 342 (1.1) | 11 903 (1.4) |
| Gender | ||
| Girl | 15 236 (48.0) | 411 944 (48.7) |
| Boy | 16 523 (52.0) | 434 075 (51.3) |
| Birth order | ||
| 1 | 12 020 (37.9) | 365 101 (43.2) |
| 2 | 12 688 (40.0) | 314 768 (37.2) |
| ≥3 | 7051 (22.2) | 166 150 (19.6) |
| Birth year | ||
| 1966–2000 | 9881 (31.1) | 312 128 (36.9) |
| 2001–2005 | 11 524 (35.4) | 297 823 (35.2) |
| 2006–2009 | 10 624 (33.5) | 236 068 (27.9) |