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. Author manuscript; available in PMC: 2015 Oct 8.
Published in final edited form as: Otolaryngol Head Neck Surg. 2014 Aug 18;151(4):627–633. doi: 10.1177/0194599814545747

Table 4.

Hazard Ratios for Cause-Specific Mortality Obtained by Multivariate Regression, Pediatric Cohort.

Covariate (reference group) Hazard Ratio (95% confidence interval) P Value
Gender (female)
 Male 1.14 (0.91, 1.44) .249
Decade of diagnosis (2000s)
 1990s 0.89 (0.65, 1.21) .455
 1980s 1.34 (0.96, 1.85) .084
 1970s 1.75 (1.23, 2.50) .002
Radiation status (not given)
 Given 2.01 (1.55, 2.60) <.001
Stage (I)
 II 4.70 (0.59, 37.66) .145
 III 12.12 (1.26, 116.9) .031
 IV 6.33 (0.84, 47.91) .074