Table 1.

Subject characteristics of smokers by presence or absence of cancer

Without cancer n = 35With cancer n = 30
CharacteristicsMean, (SD), median [min/max] N=Mean, (SD), median [min/max] N=Pa
Age (years)48.1 (11.5), 48.0 [24/70], n = 3557.8 (9.8), 58.0 [34/75], n = 300.001
Cigarettes per day14.4 (6.7), 15.0 [1/30], n = 3512.6 (11.8), 10.0 [0/45], n = 300.104
Smoking years24.1 (13.3), 25.0 [1/50], n = 3428.2 (12.8), 30.0 [2/45], n = 150.367
Alcohol frequency2.3 (1.4), 2.0 [1/5], n = 353.2 (1.6), 3.5 [1/5], n = 280.042
# Alcoholic drinks3.9 (2.5), 3.0 [1/12], n = 213.8 (2.5), 3.0 [0/10], n = 210.980
Frequency (%)Frequency (%)Pb
Gender
 Female15 (42.9%)5 (16.7%)0.031
 Male20 (57.1%)25 (83.3%)
T stagecNANA
 14 (15.4%)
 211 (42.3%)
 34 (15.4%)
 47 (26.9%)
  • NOTE: P values < 0.05 are considered significant.

  • aThe P value was from the nonparametric Wilcoxon rank sum test.

  • bThe P value is from Fisher exact test.

  • cFour subjects with cancer were missing T stage.