Constant annual rate of HAQ progression by age and treatment.
haq.lprog
A list with two elements.
A matrix with 5 columns (sname, est, se, lower, upper) for the name of the treatment, the annual progression rate for that treatment, the standard error of the progression, the .025% quantile of the progression rate and the 97.5% quantile of the progression rate, respectively.
A matrix with 5 columns (age, est, se, lower, upper) for the age range (\(age < 40\), \(40 \le age < 65\), \( age \ge 65\)), the difference between progression rate for a given age range and the overall rate, the standard error of the progression rate difference, the .025% quantile of the progression rate difference, and the 97.5% quantile of the progression rate difference, respectively.
Michaud, Kaleb, Gene Wallenstein, and Frederick Wolfe. "Treatment and nontreatment predictors of health assessment questionnaire disability progression in rheumatoid arthritis: a longitudinal study of 18,485 patients." Arthritis care & research 63.3 (2011): 366-372.
Wolfe, Frederick, and Kaleb Michaud. "The loss of health status in rheumatoid arthritis and the effect of biologic therapy: a longitudinal observational study." Arthritis research & therapy 12.2 (2010): 1.