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Joint Bone Spine
Volume 80, n° 6
pages 608-612 (décembre 2013)
Doi : 10.1016/j.jbspin.2013.01.013
accepted : 24 January 2013
Prevalence and out-patient medical costs of comorbid conditions in patients with rheumatoid arthritis
 

Manathip Osiri a, , 1 , Youwanuch Sattayasomboon b
a Division of Rheumatology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, 1873, Rama IV Road, Pathumwan, 10330 Bangkok, Thailand 
b Department of Nursing, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand 

Corresponding author. Tel.: +66 2256 4526; fax: +66 2252 8467.
Abstract
Objectives

To evaluate the prevalence, types, and out-patient direct medical costs of comorbid conditions in patients with RA in Thailand.

Methods

Information of the patients with RA treated by rheumatologists with at least one disease modifying antirheumatic drugs (DMARDs), including demographic data, RA-related medication types and treatment costs, comorbidity-related medication types and treatment costs, and total direct medical costs, was captured from King Chulalongkorn Memorial Hospital databases.

Results

The data from 684 patients with RA were included for analysis. The majority of the patients were prescribed combined DMARDs, while only 2.5% received biologics. Comorbid conditions were reported in 434 patients (63.5%). The most common comorbid condition was hypertension (51.2%). Advanced age and presence of healthcare coverage was associated with comorbid conditions. The average annual cost of non-RA-related treatments in patients with comorbid diseases was 15 times the cost in those without comorbidities (1546 vs. 104USD; P <0.001) while the total direct medical cost in patients with comorbid conditions was twice that in patients without comorbid diseases (4118 vs. 2045USD; P <0.001). Parameters that influenced total direct medical costs were RA medications costs, comorbidity, healthcare coverage, patient's age, and types of DMARDs.

Conclusions

Comorbid conditions were common in this study. However, the major cost component incurred in RA patients was the costs of RA medications and services, while the out-patient costs of comorbid conditions accounted for approximately 38% of the total costs.

The full text of this article is available in PDF format.

Keywords : Rheumatoid arthritis, Comorbid condition, Disease modifying antirheumatic drugs, Direct medical costs, Societal perspective


1  The corresponding author certifies that both authors have approved the entirety of the submitted manuscript and contributed actively to this study.


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