Cost-effective analysis of disease-modifying anti-rheumatic drugs in rheumatoid arthritis.

Abstract

The main objective of the study was to perform the pharmacoeconomic analysis of synthetic disease-modifying anti-rheumatic drugs in rheumatoid arthritis patients. A prospective, observational study was conducted in 98 rheumatoid arthritis (RA) patients meeting 2010 Rheumatoid Arthritis Classification Criteria. Treatment-naive RA patients were initiated on synthetic disease-modifying anti-rheumatic drugs (DMARD/s) and followed up for 3months. Average cost-effectiveness analysis was done by taking Health Assessment Questionnaire Disability Index (HAQ-DI) score as a measure of effectiveness. Out of the 98 RA patients, 15.30% were males and 84.69% females. 80.61% RA patients are seropositive. Majority of the study population patients (55%) were on combination of three synthetic DMARDs and almost a quarter (24.48%) were on combination of two synthetic DMARDs. The mean value of DAS 28 at baseline was 6.07±1.33 and after 3months treatment, the mean was 3.84±1.11. The mean disability index measured by HAQ-DI was significantly reduced from 1.43±0.71 to 0.81±0.61, p<0.001, after 3months treatment. The direct medical cost of treatment of RA per month is 997.05 rupees. The average cost-effectiveness ratio of combination of synthetic DMARDs was 1533.92 rupees. Treatment of RA with synthetic DMARDs controls disease activity and improves disability with reasonable cost of treatment. The majority of the direct medical cost is attributable to cost of medicine and laboratory investigation. Use of quality generic drugs and an early diagnosis would minimize the economic burden on the patient.