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Table 2 Distribution of studies by study design and gestational age of pregnancies

From: Glancing at the past and course-setting for the future: lessons from the last decade of research on medication abortion in high-income countries

Categorization Number of studies
Study design
 Cohort 101
 Cross-sectional/Observational 48
 Randomized Controlled Trial 30
 Qualitative 19
 Case–control 5
 Mixed methods 4
Trimester
 First 137
 Second 27
 Third 16
 Not stated 27
Total 207