1. Sokka T, Pincus T. Most patients receiving routine care for rheumatoid arthritis in 2001 did not meet inclusion criteria for most recent clinical trials or american college of rheumatology criteria for remission. J Rheumatol. 2003;30(6):1138–46.
2. Sokka T, Pincus T. Eligibility of patients in routine care for major clinical trials of anti-tumor necrosis factor alpha agents in rheumatoid arthritis. Arthritis Rheum. 2003;48(2):313–8.
3. Singer JD, Willett JB. Applied longitudinal data analysis: Modeling change and event occurrence. New York, New York: Oxford university press; 2003.
4. Singer JD, Willett JB, Willett JB. Applied longitudinal data analysis: modeling change and event occurrence: Oxford University Press; 2003.
5. • Lim LS, Pullenayegum E, Moineddin R, Gladman DD, Silverman ED, Feldman BM. Methods for analyzing observational longitudinal prognosis studies for rheumatic diseases: a review & worked example using a clinic-based cohort of juvenile dermatomyositis patients. Pediatr. 2017;15(1):18 Good review of methods for clinician investigators looking to start using longitudinal methods.