Study | Country Study period Study design |
Data source | Exposure definition | Non-exposure definition | Exposition period | Sample size (exposed/unexposed) Or (case / control) |
Remarks | Risk of bias |
---|---|---|---|---|---|---|---|---|
Noh 2022 |
South Korea 2011 - 2018 population based cohort retrospective |
A nationwide retrospective cohort study using healthcare data retrieved from the Health Insurance Review and Assessment Service (HIRA) database. | Pregnant women who filled at least Etizolam prescription during the first trimester (first 90 days of pregnancy). |
unexposed, sick
Pregnant women who were not prescribed any benzodiazepine from 3 months before the last menstrual period to the end of the first trimester (with similar psychiatric conditions after propensity score). |
1st trimester | 3665 / 3053381 | Propensity scored adjusted for indications and led to an unexposed cohort with similar psychiatric conditions => considered as unexposed, sick control groups. | |
The Health Insurance Review and Assessment Service (HIRA) database that comprises notably healthcare utilization (e.g., drug prescription and medical procedure). | ||||||||
Yamane 2011 |
Japan Not specified. cohort |
The Counseling Clinic for Pregnancy and Medicine of Toranomon Hospital, Tokyo, Japan. | Pregnant women who used Etizolam in the early stage of pregnancy. |
unexposed (general population or NOS)
Pregnant women who used acetaminophen without teratogenic effects. |
early pregnancy | 224 / -9 | Number of pregnant women in the control group not provided in the Abstract. | |
Not specified. |
Study | Country Study period Study design |
Data source | Case | Control | Exposition | Exposition period | Sample size (exposed/unexposed) Or (case / control) |
Remarks | Risk of bias |
---|
Risk of bias: : NA; : low; : moderate; : serious; : critical; : unclear;