Table 3

Correlations between measures of the impairment and participation dimensions after correction for the influence of the HAQ and SF-36 PF

Participation
SF-36 SFSF-36 RESF-36 RP
After correction for:HAQPFHAQPFHAQPF
*p>0.01; all other r are significant at p<0.0001. Correlations are calculated on samples varying from n=725 to n=794, except for correlations with x ray score, where the smallest sample size is n=622. For abbreviations see table 2.
Impairment
    SF-36 BP 0.31 0.29 0.28 0.26 0.47 0.48
    DAS28−0.19−0.19−0.14−0.13−0.23−0.26
    RADAI−0.31−0.30−0.31−0.34−0.24−0.36
    x Ray score 0.04* 0.03* 0.08* 0.08* 0.08* 0.05*