Table 1.

The inclusion and exclusion criteria.

	Inclusion Criteria	Exclusion Criteria
Study Status	Completed, Published	Unfinished, Unpublished
Study Type	RCT non-RCT cohort study case-control study case-control study	eviewsr case reports case series letters to the editor expert opinions conference papers
Language	English	Other than English
Year Published	≥1990	<1990
Insertion	In scheduled mode	As an emergency contraception or immediately after intervention/surgery f.e. abortion
Topic	LNG-IUS as a long-term contraceptive method	LNG-IUS as a treatment f.e. of heavy menstrual bleeding

Abbreviations: f.e.: for example; LNG-IUS: levonorgestrel-releasing intrauterine system; RCT: randomized controlled trial.