. Author manuscript; available in PMC: 2009 Nov 30.

Published in final edited form as: Pain. 2008 Oct 9;140(2):323–331. doi: 10.1016/j.pain.2008.09.004

Table 4.

Result of the hierarchical regression analysis testing regression model^a predicting spontaneous pain level

	Final Model
	β	p-value	Cumulative R²
Sex of Subject	.096	.3
Early versus Late Stage	.082	.4
Treatment location⁺
Hypopharynx Only	−.046	.6
Larynx Only	.026	.8
Co-morbidities (SIC)	−.093	.4
Treatment Type⁺⁺
Radiation & Chemotherapy	−.192	.09
Radiation & Surgery	−.050	.6
Radiation, Chemotherapy & Surgery	−.091	.3
Depression (CES-D)	.165	.1
Function-based Quality of Life (modified FACT-Head and Neck Module)	−.220	.05
Presence of metallic taste	−.244	.01
			24%

Using enter regression procedure in 3 steps

CES-D = Center for Epidemiological Studies Depression Scale SIC = Seattle Index of Co-morbidities

⁺

Oropharynx is referent location

⁺⁺

Radiation-only treatment is referent group