A. Vanderheide et al., IS IT POSSIBLE TO PREDICT THE FIRST YEAR EXTENT OF PAIN AND DISABILITY FOR PATIENTS WITH RHEUMATOID-ARTHRITIS, Journal of rheumatology, 22(8), 1995, pp. 1466-1470
Objective, To investigate prediction of the extent of suffering during
the first year of rheumatoid arthritis (RA) with patient characterist
ics found to be capable of predicting short term or longterm endpoint
disability. Methods. Ninety-five patients with recently diagnosed RA,
participating in a prospective clinical trial, were seen every 3 mo du
ring 1 year. The 12 month and cumulative values of disability (Dutch v
ersion of the Health Assessment Questionnaire) and pain (visual analog
scale) were related to demographic, clinical, laboratory, and psychol
ogical mood variables in correlation and regression analyses. Results.
Baseline values of disability and pain were related most strongly to
12 mo and cumulative values of disability; baseline pain was virtually
the only important predictor of 12 mo and cumulative pain. Other base
line characteristics had virtually no additional predictive power. Con
clusion. The short term disease course of RA in terms of disability an
d pain is most strongly related to the baseline values of these variab
les, and cannot reliably be predicted with frequently recognized longt
erm prognostic factors, such as rheumatoid factor status or sex.