The quality of evidence can be assessed using tools like the Grading of Recommendations Assessment, Development and Evaluation (GRADE) framework, which evaluates study design, risk of bias, inconsistency, indirectness, imprecision, and publication bias.

Schünemann, H.J., Mustafa, R.A., Brozek, J., Steingart, K.R., Leeflang, M., Murad, M.H., Bossuyt, P., Glasziou, P., Jaeschke, R., Lange, S. and Meerpohl, J., 2020. GRADE guidelines: 21 part 1. Study design, risk of bias, and indirectness in rating the certainty across a body of evidence for test accuracy. Journal of clinical epidemiology, 122, pp.129-141.