Evaluating the credibility of anchor based estimates of minimal important differences for patient reported outcomes: instrument development and reliability study
T. Devji, A. Carrasco-Labra, A. Qasim, M. Phillips, B. Johnston, N. Devasenapathy, D. Zeraatkar, Meha Bhatt, Xuejing Jin, R. Brignardello-Petersen, Olivia Urquhart, F. Foroutan, S. Schandelmaier, H. Pardo-Hernandez, R. Vernooij, Hsiaomin Huang, Yamna Rizwan, R. Siemieniuk, L. Lytvyn, D.walaa badawy, S. Ebrahim, T. Furukawa, G. Nesrallah, H. Schünemann, M. Bhandari, L. Thabane, G. Guyatt
British medical journal