Figure 2.

Disease activity (DAS28) and physical function (HAQ) in men and women who were younger than 65 years old and continued working in high-GDP and low-GDP countries. CI, confidence interval; DAS28, disease activity score using 28 joint counts; GDP, gross domestic product; HAQ, Health Assessment Questionnaire.

Sokka et al. Arthritis Research & Therapy 2010 12:R42   doi:10.1186/ar2951
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