In- and exclusion criteria
Full length original articles meeting the following criteria were included:
Animal studies, reviews, abstracts and expert opinions were excluded.
*DSM or ICD codes for depression or anxiety disorder are given by a professional and therefore most likely (in the past) followed by a structured diagnostic interview.
Literature searchA systematic literature search was performed in PubMed, Embase, PsychInfo and Web of Science until the 16th of June 2020. All studies that were published by that date were included. The detailed query is listed in the appendix [S1 ]. Search terms used were related to endometriosis, depression and anxiety. First, duplicates were removed. Three reviewers [EB, JM and MP] independently reviewed titles and abstracts and selected articles were reviewed on full text. Disagreements were handled by discussion and a third opinion [LV].Risk of bias assessment
Assessing the risk of bias, the Newcastle – Ottawa quality assessment scale for cohort studies and case control studies was used [24] as advised by The Cochrane Reviewers’ Handbook [25]. In studies not including a control group, the checklist for reporting case series as published by Kempen (2011), was used [26].