Lormetazepam

Study	Country Study period	Population source	Exposure definition	Non-exposure definition	Sample size	Rmk

Study	Country Study period	Case	Control	Sample size	Rmk
Kitchin, 2022	Spain 2002 - 2015	Pregnant woman suffering a miscarriage.	Pregnant woman randomly selected from the whole cohort among women who were still at risk within follow-up, by risk-set sampling and individually matched to cases.	18070 / 54209	Authors provided 2 exposure definitions: Use in both periods (continuers) and Use only during pregnancy (new users) => use of data for 'Use in both periods (continuers)', to decrease misclassification bais (exposure occurred before outcome).