Study | Country Study period |
Population source | Exposure definition | Non-exposure definition | Sample size | Rmk |
---|---|---|---|---|---|---|
Meng a (Controls unexposed, sibling), 2023 |
Taiwan 2004 - 2018 |
All singleton pregnancies of females aged 15–50 years who gave birth during the study period. | Sibling with at least one Oxazolam prescription received by the mother during early pregnancy (the first 20 weeks of pregnancy). |
sibling
Discordant matched sibling without benzodiazepine or Z-hypnotic prescriptions from 30 days before the date of the estimated last menstrual period to the end of the 20th week of pregnancy. |
-9 / -9 | Number of exposures not provided (authors provided number of Exposure discordant pairs and number of Case discordant pairs). |
Meng a (Controls unexposed, sick), 2023 |
Taiwan 2004 - 2018 |
All singleton pregnancies of females aged 15–50 years who gave birth during the study period. | At least one Oxazolam prescription received by a mother during early pregnancy (the first 20 weeks of pregnancy). |
unexposed, sick
Pregnant women with no benzodiazepine or Z-hypnotic prescriptions from 30 days before the date of the estimated last menstrual period to the end of the 20th week of pregnancy. |
7632 / 2771663 | Use of results obtained with PS-FSW because more exposures, with a sick control group and sensitivity analyses (sibling control study, and paternal negative control design) that obtained similar results. |
Meng b, 2023 |
Taiwan 2004 - 2018 |
Women with pregnancies from both the two national health databases. | Women receiving at least 1 prescription of Oxazolam during the risk period only (1-28 days before miscarriage). |
unexposed, sick
Women receiving at least 1 prescription of Oxazolam during the reference period only (181-208 days before the last menstrual period). |
136134 / 134864 | Use of Case-Time-Control (CTC) Design OR => nb of exposures/cases/controls not applicable; and the main Reference period, i.e 181 to 208 days before the last menstrual period. |
Study | Country Study period |
Case | Control | Sample size | Rmk |
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