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Table 6 Copy number variations in laryngeal cancer — multivariable models assessing gender, age, smoking history, and TNM stage

From: Low copy number of mitochondrial DNA (mtDNA) predicts worse prognosis in early-stage laryngeal cancer patients

Characteristics Copy number <4.02   Copy number >5.42  
OR*(95% CI) P OR*(95% CI) P
Gender 3.48 (0.46-26.59) 0.23 2.45 (0.37-16.42) 0.36
Age, years 1.00 (0.96-1.04) 0.96 1.00 (0.96-1.05) 0.87
Smoking history1 0.39 (0.13-1.17) 0.09 0.27 (0.09-0.80) 0.02
TNM stage2 1.62 (1.09-2.41) 0.02 1.12 (0.76-1.65) 0.57
  1. *OR: odds ratio with 95% confidence interval; 1Smoking history (at least 10 pack-years); 2TNM stage (I; II; III; IV); The cases with 4.02-5.42 mtDNA copies were used as reference.