Letter to the Editor: Analytic approaches for prognostic studies of persistent pain following knee arthroplasty

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Riddle D L, Dumenci L. Using two predictive models to capture two types of poor outcomes in knee arthroplasty: a multisite longitudinal cohort study. Arthritis Rheumatol 2024; 76(7): 1036-46. doi: 10.1002/art.42819.

Riddle D L, Dumenci L. Performance of baseline quartile-stratified minimal clinically important difference estimates was superior to individual minimal clinically important difference estimates when compared with a gold standard comparator of important change. Pain 2025; 166(6): 1450-6. doi: 10.1097/j.pain.0000000000003492.

Riddle D L, Macfarlane G J, Hamilton D F, Beasley M, Dumenci L. Cross-validation of good versus poor self-reported outcome trajectory types following knee arthroplasty. Osteoarthritis Cartilage 2022; 30(1): 61-8. doi: 10.1016/j.joca.2021.09.004.

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Riddle D L, Dumenci L. Limitations of minimal clinically important difference estimates and potential alternatives. J Bone Joint Surg Am 2024; 06(10): 931-7. doi: 10.2106/JBJS.23.00467.

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Riddle D L, Dumenci L. The latent difference score model is a viable alternative to arithmetic difference score-based anchor-driven minimal important change calculation. J Patient Rep Outcomes 2026; 10(1): 118. doi: 10.1186/s41687-026-01085-2.