CASP Checklist: 11 Questions for Case Control Study Appraisal

This checklist provides 11 questions to help evaluate the validity, results, and local applicability of a case control study. The questions are divided into three sections: validity, results, and local applicability. The checklist is designed to be used as an educational tool in a workshop setting. No scoring system is suggested. The checklist was developed by a group of experts and is based on JAMA 'Users’ guides to the medical literature 1994.