Effect of delivery by family physicians on perinatal mortality and maternal morbidity and mortality using logistic and IV-adjusted regression
| Method | Outcome; RR (95% CI) | |
|---|---|---|
| Perinatal mortality | Maternal morbidity and mortality | |
| Logistic regression | ||
| Unadjusted | 0.43 (0.34–0.55) | 0.81 (0.68–0.96) |
| Multivariable adjusted* | 0.98 (0.85–1.14) | 0.81 (0.70–0.94) |
| GMM (IV adjusted) | ||
| Unadjusted | 0.80 (0.40–1.57) | 1.49 (0.77–2.87) |
| Multivariable adjusted* | 0.97 (0.58–1.64) | 1.13 (0.65–1.95) |
Note: CI = confidence interval, GMM = generalized method of moments, IV = instrumental variable, RR = risk ratio.
↵* Multivariable adjusted models were controlled for all comorbidities listed in Appendix 1 (available at www.cmaj.ca/lookup/suppl/doi:10.1503/cmaj.141633/-/DC1).