The Influence of Support Groups on Quality of Life in Head and Neck Cancer Patients

Table 2

Comparison with US normative values and cancer cohorts.

Domain	US norms (Z scores)	All cancer patients (standard normal distribution = Z score)	𝑃 values (all cancer versus US norms)	Support group patients (mean Z scores)	𝑃 values (support group versus US norms)
Role physical	82.51	60.47	0.0087	56.85	0.006
Physical function	83.29	71.36	0.0003	71.19	0.058
Social function	84.30	67.47	0.0015	67.26	0.013
Role emotional	87.40	68.47	0.0005	63.10	0.003
General health	70.85	64.78	0.101	60.4	0.061