Risk of bias assessment (sometimes called quality assessment or critical appraisal) helps to establish the certainty or strength of the evidence from the results and findings of a study. A risk of bias assessment is performed for each included study in your review.
There are a number of checklists available for different study designs including qualitative studies on the CASP website.
Critical Appraisal Skills Programme (CASP)
Cochrane Risk of Bias Tool (RoB 2 and RoB 1) for intervention studies, usually randomised controlled trials. The tool assesses domains such as selection, performance, detection, attrition and reporting biases.
Newcastle-Ottawa Scale for observational studies. Assesses selection bias, comparability and outcome domains.
QUADAS-C tool for diagnostic test accuracy studies.
robvis is a web app designed to for visualizing risk-of-bias assessments performed as part of a systematic review.