Figure 3.

Longitudinal response of joint counts and composite indices. Pearson correlation coefficient revealed a strong positive association between swollen (a) and tender (b) 28-joint counts and 32-joint counts and an almost perfect linear relationship between DAS28 and 'DAS32' (c) or SDAI and 'SDAI32' (d).

Kapral et al. Arthritis Research & Therapy 2007 9:R72   doi:10.1186/ar2270
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