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. 2010 Sep 22;12(5):R177. doi: 10.1186/ar3141

Table 3.

Spearman correlations between WPAI outcomes and health status outcomes

Function Pain Pt global estimate Fatigue PtGA
Percent work time missed 0.39 0.36 0.36 0.37 0.34
Percent impairment while working 0.69 0.75 0.74 0.67 0.76
Percent overall work impairment 0.67 0.73 0.71 0.68 0.73
Percent activity impairment 0.73 0.77 0.77 0.68 0.77

Pt global estimate, patient global estimate on health impact; PtGA, patient global assessment of disease activity