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: Using a nested case–control design, we obtained data from the Quebec Pregnancy Registry for 4705 women who had a spontaneous abortion. For each instance, we randomly selected 10 controls from ...

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 ...