Online Appendices
- Appendix 1: Algorithm used to estimate gestational age
- Appendix 10: Risk of spontaneous abortion associated with the use of antibiotics during pregnancy, by drug classes, odds ratio (95% CI)
- Appendix 11: Risk of spontaneous abortion associated with the use of antibiotics during pregnancy, by drug classes, odd ratio (95% CI)
- Appendix 12: Risk of spontaneous abortion associated with the use of antibiotics during pregnancy, by drug classes, odd ratio, with adjustment for multiple testing using the Bonferroni correction
- Appendix 13: Risk of spontaneous abortion associated with the use of antibiotics during pregnancy, by drug classes, odds ratio (95% CI), with adjustment for multiple testing using the Bonferroni correction
- Appendix 2: Diagnostic codes and medication (American Hospital Formulary Service (AHFS) or The Anatomical Therapeutic Chemical (ATC) for covariates
- Appendix 3: Use of Directed Acyclic Graph (DAG) to illustrate structure of confounding with maternal infections
- Appendix 4: Risk of spontaneous abortion associated with the use of antibiotics during pregnancy, by drug classes, odds ratio (95% CI)
- Appendix 5: Risk of spontaneous abortion associated with the use of antibiotics during pregnancy, by individual drugs, using exposure to penicillins or cephalosporins as the reference category
- Appendix 6: Risk of spontaneous abortion associated with the use of antibiotics during pregnancy, by drug classes from the beginning of gestation until 15 days before index date
- Appendix 7: Risk of spontaneous abortion associated with the use of antibiotics during pregnancy, by drug classes from the beginning of gestation until 15 days before index date
- Appendix 8: Risk of spontaneous abortion associated with the use of antibiotics for the treatment of UTI, by drug classes in pregnancies with UTI
- Appendix 9: Risk of spontaneous abortion associated with the use of antibiotics for the treatment of RTI by drug classes, odds ratio (95% CI) in a cohort of women with RTI