Table 1.

Inclusion criteria

Inclusion criteria
1. Article was published in English, French, German or Dutch and available as full text article.
2. The study included a PRO questionnaire specifically used for the evaluation of patients following hip arthroscopy
3. The main goal of the study was to evaluate the quality of a PRO questionnaire used for the evaluation of patients undergoing hip arthroscopy
4. The study used new data instead of data extracted from other research (for example systematic reviews)