DARWIN EU® - Prescription of Common Drugs Before and During Pregnancy in Europe

27/08/2026
19/10/2026
EU PAS number:
EUPAS1000001101
Study
Planned
Study type

Study topic

Human medicinal product

Study type

Non-interventional study

Scope of the study

Drug utilisation

Data collection methods

Secondary use of data
Non-interventional study

Non-interventional study design

Cohort
Population studied

Short description of the study population

The study population will consist of individuals with a recorded pregnancy.

Age groups

  • In utero
  • Paediatric Population (< 18 years)
    • Neonate
      • Preterm newborn infants (0 – 27 days)
      • Term newborn infants (0 – 27 days)
    • Infants and toddlers (28 days – 23 months)
    • Children (2 to < 12 years)
    • Adolescents (12 to < 18 years)
  • Adult and elderly population (≥18 years)
    • Adults (18 to < 65 years)
      • Adults (18 to < 46 years)
      • Adults (46 to < 65 years)
    • Elderly (≥ 65 years)
      • Adults (65 to < 75 years)
      • Adults (75 to < 85 years)
      • Adults (85 years and over)
Study design details

Study design

A retrospective cohort study

Main study objective

The specific objectives of this study are:
1. To estimate the proportion of individuals prescribed commonly prescribed drugs, overall and by pregnancy trimester.
2. To estimate the proportion of individuals prescribed commonly prescribed drugs before pregnancy which:
a) are discontinued before pregnancy start;
b) continued into the first trimester of pregnancy but not into the second trimester;
c) continued into the first and second trimesters but not into the third trimester; or
d) continued into the first, second, and third trimesters of pregnancy.
3. To estimate the proportion of individuals prescribed commonly prescribed drugs initiated during pregnancy, overall and by pregnancy trimester.
4. To describe the dose and treatment duration during pregnancy for the most commonly prescribed drugs ongoing at pregnancy start.

Setting

4 primary care data sources in the DARWIN EU® Network of Data Partners from 4 European countries