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. Author manuscript; available in PMC: 2011 Jul 1.
Published in final edited form as: Cancer Prev Res (Phila). 2010 Jun 22;3(7):800–809. doi: 10.1158/1940-6207.CAPR-09-0163

Table 4.

Multicovariate analysis for time to oral cancer on FISH status for EGFR gene and chromosome 7 copies (E/N = 24/49)*

Variable Hazard Ratio 95% CI for HR p-value
Age 1.01 0.98 1.04 0.577
BC+RP/RP-only versus 13cRA 1.19 0.52 2.76 0.682
Histologic status at baseline: dysplasia versus hyperplasia 1.02 0.42 2.46 0.965
FISH: positive versus negative 3.62 1.44 9.10 0.006

Abbreviations: E/N, number of events and number of patients; Pr > ChiSq, P-value; HR, hazard ratio; CI, confidence interval; BC, β-carotene; RP: retinyl palmitate; 13cRA, 13-cis-retinoic acid; FISH, fluorescence in situ hybridization.

*

This analysis produced the maximum-likelihood estimates.