We evaluated the risk of spontaneous abortion in relation to the use of antidepressants during pregnancy. Methods: Using a nested case–control study design, we obtained data from the Quebec Pregnancy ...

Methods Study design We used a nested case–control study design. We chose this design because it shows similar effect sizes to a prospective cohort approach with time-varying exposure to medication, ...

The team conducted a nested case-control study (an observational study that is being conducted within a larger cohort study) within BioMe, a large, electronic health record-linked research ...