Association between opioid type and persistent postpartum opioid use
| No. (%) of patients with outcome | RR (95% CI) | p value, IPTW | |||
|---|---|---|---|---|---|
| Oxycodone | Codeine | Unweighted | IPTW* | ||
| Full cohort, n | 49 299 | 21 308 | |||
| 947 (1.92) | 513 (2.41) | 0.80 (0.72–0.89) | 1.04 (0.91–1.20) | 0.561 | |
| Vaginal delivery, n | 5185 | 8937 | |||
| 178 (3.43) | 240 (2.69) | 1.28 (1.06–1.55) | 1.63 (1.31–2.03) | < 0.0001 | |
| Cesarean delivery, n | 44 114 | 12 371 | |||
| 769 (1.74) | 273 (2.21) | 0.79 (0.69–0.91) | 0.85 (0.73–1.00) | 0.045 | |
Note: CI = confidence interval, IPTW = inverse probability of treatment weighting, RR = relative risk.
↵* Stabilized weights.