Study characteristics
An overview of the included articles, study design, sample size,
population characteristics, measurement tools, results and factors
correlated to anxiety and depression in endometriosis patients is listed
in the appendix S2 [27-73]. We have included 41 studies
with a cross-sectional design, three longitudinal cohort studies and
three retrospective cohort studies. Most studies (52%) originated from
Europe, 26% from the United States of America or Canada, 15% from
South and central America. The remaining articles (7%) originated from
Asia, Africa or Oceania. Eleven of the included studies were published
in the current year 2020.