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. 2025 Aug 25;25:884. doi: 10.1186/s12884-025-07974-6

Table 1.

Baseline characteristics of included studies

First author and year Country Study design Sample Size Age(years) Assessment of exposure Outcome Assessment of outcome
Toh 2009 [24] USA and Canada retrospective cohort study 5731 < 25(18.9%)

Telephone

interview

GH/PE Self-reported
Katon 2012 [13] USA prospective study 1656 ≥15 years Self-report GH ICD-9 diagnoses
Palmsten 2012 [33] Canada retrospective cohort study 69,448 Median age was 31 pharmacy dispensing record PE ICD-9
De Vera 2012 [17] Canada case–control study 13,376 Mean age was 27.3 Prescription Drug File GH ICD-9
Palmsten 2013 [39] Canada prospective cohort study 85,767 Median age was 23–27 medical records PE ICD-9CM diagnosis code
Avalos 2015 [23] USA retrospective cohort study 18,134 18 years and older electronic medical records PE ICD-9CM diagnosis code
Malm 2015 [18] Finland prospective study study 25,381 ≤40 years Drug Reimbursement Register GH Medical Birth Register
De Ocampo 2016 [62] USA and Canada retrospective cohort study 3471 Mean age was 32.0 for unexposed interview GH/PE Self-reported
Lupattelli 2017 [26] Norway prospective cohort study 5745 Mean age was 30 for exposed record PE ICD-9CM diagnosis code
Yonkers 2017 [22] USA retrospective cohort study 2654 ≥35(26.6%) Telephone interview GH Medial records
Zakiyah 2018 [11] Netherlands retrospective cohort study 28,020 Mean age was 31.1 for exposed The prescription database IADB GH Dutch Society of Obstetrics and Gynaecology
Bernard 2019 [27] Canada

prospective

cohort study

6761 18 years and older record PE ICD-9CM diagnosis code
Huybrechts 2020 [14] USA cohort study 1.3 to 4.1 million 18–55

outpatient

prescription

PE ICD-9 diagnostic
Tran 2021 [6] Netherlands retrospective cohort study 94,788 ≥35(11.61%) Netherlands Perinatal Registry and the PHARMO Database PE medical records
Yang 2021 [61] Taiwan, China retrospective cohort study 5664 Mean age was 31.3 prescription drug utilization of Health and Welfare Database GH/PE ICD-9CM diagnosis code
Galbally 2023 [9] Australia retrospective cohort study 229 Mean age was 32

Mercy Pregnancy

Emotional Wellbeing Study

GH Australian Guidelines
Benevent 2023 [25] France retrospective cohort study 143,391 Mean age was 30.5 for unexposed prescription drug utilization of EFEMERIS database GH/PE Medical records

SSRIs selective serotonin reuptake inhibitors, SNRIs selective serotonin-norepinephrine reuptake inhibitors, TCAs tricyclic antidepressants, GH/PE gestational hypertension or preeclampsia