AB0270 THE IMPACT OF DIABETES MELLITUS ON OUTCOMES OF RHEUMATOID ARTHRITIS AT 5-YEAR FOLLOW-UP: RESULTS FROM A MULTI-ETHNIC ASIAN COHORT IN SINGAPORE

Background: Number of patients with rheumatoid arthritis in Montenegro amounts around 3,000, while 8% of them are on biological therapy. This percent is similar, or even higher in comparison to countries that are highly comparable to Montenegro. However, the percentage is still lower than in European countries. Objectives: Objective of the study was to identify the differences between impact of biological and conventional therapy on quality of life of RA patients, their work ability and productivity, mental health, emotional state and social inclusion. Methods: The analysis was based on data gathered from the questionnaires filled by RA patients in Montenegro: 92 patients treated with biological therapy and 78 treated with conventional therapy. More insights and information from examined patients were gathered on two focus groups. Following indicators were used in the study: two indicators that measure work ability and productivity: one monetized – Work Productivity and Activity Impairment Questionnaire General Health V2.0 (WPAI-GH) and one non-monetized – RA Work Instability Scale (RA WIS), and two indicators that measure quality of life – Health Assessment Questionnaire (HAQ-DI) and RAND 36-Item Health Survey (SF-36). Results: WPAI-GH results are used in evaluation of absenteeism and presentism costs per RA patient per annum, which are caused exclusively by rheumatoid arthritis. WPAI-GH results are presented in the following figure. Total cost of absenteeism and presenteeism of RA patients in Montenegro amounts to 3.8 million EUR per annum. Results of RA WIS indicator suggest that patients treated with biological therapy are characterized by low to moderate level of work instability, and patients treated with conventional therapy by moderate level. Patients treated with biological therapy have shown 25% lower level of work instability. HAQ-DI indicator shows that both groups of patients are characterized by mild difficulties to moderate disability in performing everyday activities. However, patients treated with conventional therapy deal with higher level of difficulties, even though their level of RA progression is lower, on average. SF-36 indicator shows that patients treated with conventional therapy have lower level of physical functioning, followed by 26% higher pain intensity. They are 25% more exposed to limitations due to physical health problems caused by RA, and 20% more to limitations due to emotional problems. Patients treated with biological therapy, on average, rate their health with 50% higher rank in comparison to subjective health rate of patients treated with conventional therapy. They also feel that their health has improved during the past year, or stayed approximately the same, while patients treated with conventional therapy feel that their health condition has aggravated, or stayed unchanged. Conclusion: Results show that health condition, emotional state and life quality are better among the patients treated with biological therapy. Also, their productivity is higher compared to patients treated with conventional therapy. This conclusion is additionally supported by the fact that there is more progression of disease among RA patients treated with biological therapy, as well as by the fact that the average duration of RA is almost two times longer among examinees who are on biological therapy than among examinees who are on conventional therapy. Accordingly, access to biological therapy for greater number of patients in earlier stage of disease would result in reduction costs of lost productivity and work disability connected to RA, as well as in mitigation of RA impact on lives and functionality of patients. Disclosure of Interests: None declared