Table 1.
The characteristics of women at birth, stratified by opioid agonist treatment (OAT) dispensing during pregnancy.
| OAT | No OAT | |
|---|---|---|
| Number | 1059 | 397,175 |
| Smoked during pregnancy, n (%) | 808 (76.3%) | 47,629 (12.0%) |
| Age (years), mean ± sd | 30.1 ± 5.1 | 30.4 ± 5.6 |
| Previous pregnancies, median (IQR) | 3 (1, 4) | 1 (0, 2) |
| Low socio-economic status1, n (%) | 168 (15.7%) | 32,345 (8.0%) |
| Residing in regional/remote area, n (%) | 56 (5.3%) | 33,468 (8.4%) |
N, number; IQR, interquartile range; OAT, opioid agonist treatment
1Residing in a low socio-economic area (lowest 20%) at the time of birth, calculated based on Socio-Economic Indexes for Area (SEIFA)