Table 3

Correlation coefficients between sum scores power Doppler (PD) of the different joint combinations

PD 12-joint score

PD 28-joint score

PD 44-joint score

PD 78-joint score


PD 7-joint score

0.89/0.89

0.92/0.94

0.94/0.93

0.95/0.95

PD 12-joint score

0.81/0.85

0.86/0.85

0.86/0.89

PD 28-joint score

0.94/0.95

0.93/0.95

PD 44-joint score

0.95/0.98


Spearman's rank correlation coefficients between sum scores PD of the different joint combinations at baseline and at 12 months follow-up (in bold italics) (P < 0.001 for all the correlations).

Hammer and Kvien Arthritis Research & Therapy 2011 13:R78   doi:10.1186/ar3341

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