| Study | Country Study period |
Population source | Exposure definition | Non-exposure definition | Sample size | Rmk |
|---|---|---|---|---|---|---|
| Kjaersgaard, 2013 |
Denmark 1997 - 2008 |
All clinically recognized pregnancies in Denmark with an estimated conception and an observed pregnancy outcome during the study period. | Mother that had redeemed a prescription for Imipramine at any time from 30 days before conception up to 1 day before the end of pregnancy. (This is a subgroup of exposure among the whole exposed group considered in the study). |
unexposed (general population or NOS)
Mother that had not redeemed any prescription for antidepressant medication from 6 months before conception up to 1 day before the end of the pregnancy. |
-9 / 983258 | Molar or ectopic pregnancies (ICD-10: O00.0– O01.9) were excluded from the main analyses. Unexposed cohort: 1843 plus 981415 = 983258. |
| Lee (Controls exposed to SSRI), 2025 |
China 2003 - 2018 |
All pregnant women aged 15–50 years who gave a singleton livebirth or stillbirth (≥20 weeks of gestation) in public hospitals in Hong Kong between January 1, 2003 and December 31, 2018. | Women filling at least one prescription of Imipramine only during pregnancy, that is the period between the date of the last menstrual period and the date of delivery. |
exposed to other treatment, sick
Women filling at least one prescription of any selective serotonin reuptake inhibitors (SSRI) only during pregnancy, that is the period between the date of the last menstrual period and the date of delivery. |
64 / 1465 | |
| Lee (Controls unexposed, general pop), 2025 |
China 2003 - 2018 |
All pregnant women aged 15–50 years who gave a singleton livebirth or stillbirth (≥20 weeks of gestation) in public hospitals in Hong Kong between January 1, 2003 and December 31, 2018. | Women filling at least one prescription of Imipramine only during pregnancy, that is the period between the date of the last menstrual period and the date of delivery. |
unexposed (general population or NOS)
Women who were not prescribed with any antidepressant during index pregnancy. |
64 / 463440 |
| Study | Country Study period |
Case | Control | Sample size | Rmk |
|---|---|---|---|---|---|
| Anderson, 2020 |
USA 1997 - 2011 |
The case infants were infants born alive or died at 20 SG or more and who had received a diagnosis of at least one selected birth defect. | The controls were live-born infants with no major birth defects who were randomly selected from hospital or state birth-certificate records from the same geographic areas. | 30630 / 11478 | 'Infants with recognized or strongly suspected chromosomal abnormalities or single-gene conditions were excluded from the study.' |
| Kullander, 1976 |
Sweden 1963 - 1965 |
Infants with different kinds of malformations. | Infants without malformations. | 751 / 5002 |