Table 1.
Demographic data, pregnancy and birth details mother and baby (up to one year following the birth)
| With GORD n = 9152 |
Without GORD n = 860,036 |
P | |
|---|---|---|---|
| Age of mothera | 30.4 (5.50) | 30.5 (5.60) | .074 |
| Primiparous | 51.4% | 41.7% | < 0.000 |
| Mother Australian born | 83.0% | 70.6% | < 0.000 |
| Gestation at booking visita | 9.8 (5.42) | 10.9 (6.52) | < 0.000 |
| Born in private hospital | 30.5% | 24.7% | < 0.000 |
| Any maternal hypertension | 9.4% | 6.6% | < 0.000 |
| Any maternal diabetes | 5.4% | 5.3% | 0.587 |
| Any maternal smoking | 14.0% | 13.6% | 0.275 |
| Any maternal psychiatric condition | 35.0% | 9.4% | < 0.000 |
| Multiple birth | 8.7% | 2.9% | < 0.000 |
| Non-cephalic presentation | 8.5% | 4.9% | < 0.000 |
| Labour induced | 25.7% | 25.1% | 0.198 |
| Gestation at birtha | 37.9 (3.10) | 39.0 (1.86) | < 0.000 |
| Premature (< 37 weeks gestation) | 18.1% | 6.4% | < 0.000 |
| Early term birth (37–38 weeks gestation) | 27.5% | 22.5% | < 0.000 |
| Birth type | |||
| Normal vaginal | 50.8% | 60.8% | < 0.000 |
| Instrumental | 12.0% | 10.8% | |
| Caesarean section | 37.2% | 28.4% | |
| APGAR 1a | 8.1 (1.65) | 8.4 (1.36) | < 0.000 |
| APGAR 5a | 8.9 (0.92) | 9.0 (0.73) | < 0.000 |
| Second APGAR< 7 | 2.9% | 1.3% | < 0.000 |
| Birth weight (grams)a | 3140 (768.0) | 3391 (561.2) | < 0.000 |
| Birth weight < 3rd centile | 2.3% | 1.9% | < 0.000 |
| Admitted to SCN/NICU | 29.9% | 14.7% | < 0.000 |
| Required resuscitation (any type) | 46.9% | 36.8% | < 0.000 |
| Intubation of any form | 3.6% | 0.8% | < 0.000 |
| Male baby | 54.6% | 50.7% | < 0.000 |
Chi-square unless other indicated -a (mean and SD)