Assessing the external validity of algorithms to estimate EQ-5D-3L from the WOMAC

Table 2 Summary statistics of the observed and predicted EQ-5D-3L index scores

	Mean	SD	Median	Min	Max
Observed	0.718	0.214	0.727	−0.181	1.0
Barton prediction	0.642	0.157	0.682	−0.207	0.829
Xie prediction	0.750	0.056	0.750	0.576	0.834
Wailoo prediction_WA	0.648	0.219	0.662	−0.096	0.972
Wailoo prediction_CEC	0.676	0.280	0.703	−0.290	0.995

SD standard deviation, WA weighted average, CEC conditional on estimated component

ISSN: 1477-7525