Table 1.
Sociodemographic features according to smoking and drinking categories.
| Feature | NSND N (%) | SD N (%) | SND N (%) | NSD N (%) | p-value |
| Gender | <0.001* | ||||
| Female | 57 (71.3) | 96 (7.0) | 67 (47.9) | 11 (28.2) | |
| Male | 23 (28.8) | 1278 (93.0) | 73 (52.1) | 28 (71.8) | |
| Age (y) | <0.001† | ||||
| Mean (sd) | 62.79 (16.30)b‡ | 57.13 (9.79) a‡ | 62.21 (11.74) b‡ | 62.33 (15.12) b‡ | |
| Ethnicity | <0.001* | ||||
| White | 65 (82.3) | 988 (74.0) | 106 (76.8) | 32 (82.1) | |
| Mulatto | 5 (6.3) | 242 (18.1) | 22 (15.9) | 1 (2.6) | |
| Black | 4 (5.1) | 99 (7.4) | 6 (4.3) | 5 (12.8) | |
| Asian | 4 (5.1) | 4 (0.3) | 4 (2.9) | 1 (2.6) | |
| Indian | 1 (1.3) | 3 (0.2) | 0 | 0 | |
| BMI | <0.001† | ||||
| Mean (sd) | 26.81 (4.89) b‡ | 23.92 (3.88) a‡ | 24.58 (4.53) a‡ | 26.62 (4.06) b‡ | |
| Smoking 1st degree relatives | <0.001† | ||||
| Mean (sd) | 2.39 (2.38) a‡ | 4.17 (2.93) b‡ | 4.44 (3.76) b‡ | 3.16 (2.52) a, b ‡ | |
| Relatives with cancer/total relatives | 0.406† | ||||
| Mean (sd) | 0.08 (0.10) | 0.10 (0.14) | 0.09 (0.13) | 0.10 (0.14) |
NSND: Non-smokers/non-drinkers; SD: smokers/drinkers; SND: smokers/non drinkers; NSD: non smokers/drinkers. sd: standard deviation. BMI: body mass index. *Chi-square test. †Analysis of variance (ANOVA one-way). ‡Tukey's test – groups with the same letter are not different (p>0.05).