Erhalten Kranke mit einer aktiven chronischen Polyarthritis eine «Basistherapie»?

The determination of the adequacy of an individual therapeutical regimen is part of the process evaluation of medical care. To evaluate the adequacy of individual antirheumatic therapy, we developed a five step procedure: 1. Assessment of the patient's health status; 2. assessment of his/her former and current therapy; 3. determination of the adequate anti-rheumatic therapy following an explicit norm; 4. formal comparison of current and adequate treatment; 5. clinical evaluation of possible differences between norm and reality. Due to methodological reasons we concentrated on the current treatment of rheumatoid arthritis (rA) patients with remission inducing drugs (RIDs; e.g. Chloroquine, Gold). The study analyzed the RID treatment of 75 rA-sufferers: 25 patients were referred to our outpatient department for the first time in late 1986; 25 patients were recruited from a social-medical study covering employed but actually disabled members of a major health insurance (AOK) in Hannover; 25 subjects were derived from an ongoing population study («prevalence and care of rheumatoid arthritis in Hannover»). Only 9 out of 49 (18%) patients with an active disease, formally in need of treatment, were currently treated with RIDs. Thus 40 out of 49 (82%) seemed to be under an inadequate treatment. From the clinical point of view this formal judgement was assumed to be false positive in 5 and false negative in 15 cases. In relation to the clinical judgement we found for the formal procedure a sensitivity of 0.70 with a specificity of 0.80 and an overall agreement of 73% (kappa 0.44).