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Table 1 Characteristics of the study population

From: Smoking index, lifestyle factors, and genomic instability assessed by single-cell gel electrophoresis: a cross-sectional study in subjects from Yucatan, Mexico

  Smokers Non-smokers Total
Current smokers Former smokers
Participants (%) 22 (26.8%) 17 (20.7%) 43 (52.4%) 82 (100%)
Men (%) 12 (14.6%) 11 (13.4%) 12 (14.6%) 35 (42.7%)
Women (%) 10 (12.2%) 6 (7.3%) 31 (37.8%) 47 (57.3%)
Age mean 40.6 55.3 47.2 47.1
(95% CI) (31–50.2) (45–65.6) (41–53.4) (42.5–51.7)
Range 18–89 19–95 18–93 18–95
Age
 Young adults group (18–35 years) 11 (13.4%) 3 (3.7%) 12 (14.6%) 26 (32%)
 Adults group 2 (36–59 years) 6 (7.3%) 7 (8.5%) 19 (23.2%) 32 (39%)
 Older adults group 3 (60–95 years) 5 (6%) 7 (8.5%) 12 (14.6%) 24 (29%)
BMI
 Normal 6 (7.3%) 6 (7.3%) 9 (11%) 21 (25.6%)
 Overweight 10 (12.2%) 7 (8.5%) 19 (23.2%) 36 (43.9%)
 Obesity 6 (7.3%) 4 (4.9%) 15 (18.3%) 25 (30.5%)
Passive smokers N/A 7 (8.5%) 8 (9.7%) 15 (18.2%)
Non-passive N/A 10 (12.2%) 35 (42.6%) 45 (54.8%)
Diet
 Correct 9 (11%) 10 (12.2%) 30 (36.6%) 49 (59.8%)
 Incorrect 13 (15.8%) 7 (8.5%) 13 (15.8%) 33 (40.2%)
Regular exercise 14 (17%) 11 (13.4%) 35 (42.6%) 60 (73%)
Family history of cancer (grandparents) 4 (4.9%) 5 (6%) 16 (19.5%) 25 (30.4%)
Family history of cancer (parents) 5 (6%) 4 (4.9%) 10 (12.2%) 19 (23.1%)
  1. Data are presented as the number and percentage of participants; age is the mean and corresponding confidence intervals. 95% CI = 95% confidence interval