. Author manuscript; available in PMC: 2020 Jan 1.

Published in final edited form as: Pract Radiat Oncol. 2018 Sep 20;9(1):e83–e89. doi: 10.1016/j.prro.2018.09.001

Table 3.

Results of Vuong’s test for overall survival at 1, 2, and 3 years

Time of analysis	Significantly different models	Best model parameter	Second-best vs best
1 y	NA	CCIa	CCI (P = .13)
2 y	NA	CCIa	CCI (P = .83)
3 y	CCI vs. Age (P = .023) CCIa vs Age (P = .015)	CCIa	CCI (P = .47)

Abbreviations: CCI = Charlson Comorbidity Index; CCIa = age-adjusted CCI; NA = None.

Models with significantly different prognostic power are given with appropriate P-values. The most prognostic covariate among all models is given along with the corresponding P-value when compared to the second most prognostic model. A P-value ≤ .05 means the listed covariate is significantly better at predicting overall survival at that time point than its counterpart.