The objectives of this study were twofold: to assess if there are independent effects of variables representing patients' perceptions of disease on intensification of drug therapy in patients with RA seen in daily practice; and to test the hypothesis that effects of patients' perceptions of disease are mediated through patient self-reported willingness to alter therapy.
Before being seen by a physician, consecutive patients with RA, attending the Radboudumc outpatient rheumatology clinic, were asked to fill out a short questionnaire regarding the following four items: perceived health change, satisfaction with current health, willingness to change therapy and expected health change until the next visit. Independent associations between these measures, registered clinical measures and synthetic DMARD/biologic DMARD (including CSs) intensification were studied with logistic regression. Mediation analysis was performed focusing on the strongest predictor and self-reported willingness as a mediator.
Out of 453 patients with RA, 65% female, 67% RF positive, medication was intensified for 82 patients (18%). All patient perception measures exhibited significant associations, independent of clinical measures, of which patient satisfaction with current health state was the strongest [odds ratio (OR) 0.21, 95% CI: 0.10, 0.44]. Significant mediation of the effect of patient satisfaction through willingness to alter therapy on actual registered medication intensification was found.
Treat to Target interventions should address patients' perceptions of their disease, and the related health goals patients aim to achieve, in addition to the attained level of disease activity.