Table 3.

Ordinary least squares regression model

	Model 1a			Model 2b
	β	SE	p value	β	SE	p value
Intercept	0.53897	0.03507	< 0.0001	0.56317	0.02044	< 0.0001
Global health status	0.00092	0.00018	< 0.0001	0.00097	0.00018	< 0.0001
Physical functioning	0.00223	0.00027	< 0.0001	0.00222	0.00026	< 0.0001
Role functioning	0.00065	0.00019	0.001	0.00067	0.00018	0.0001
Emotional functioning	0.00038	0.00021	0.071	0.00045	0.00017	0.01
Cognitive functioning	0.00015	0.00021	0.474
Social functioning	0.0002	0.00017	0.234
Fatigue	0.00042	0.00027	0.111
Nausea and vomiting	−0.00005	0.00015	0.737
Pain	−0.00123	0.00017	< 0.0001	−0.00125	0.00016	< 0.0001
Dyspnea	−0.00024	0.00015	0.102
Insomnia	−0.00009	0.00013	0.494
Appetite loss	−0.00001	0.00014	0.943
Constipation	−0.00004	0.00012	0.72
Diarrhea	0.00005	0.00013	0.72
Financial difficulties	0.00005	0.00012	0.673

^aModel 1 included all functioning and symptom scales and items of the EORTC QLQ-C30 as explanatory variables.

^bModel 2 applied backward elimination to Model 1.