Table 1

Characteristics of cross-sectional KORA S4.

Current smoker

Former smoker

Never smoker

Pa


Current versus former smoker

Current versus never smoker


Male (N = 646)

N (%)

125 (19.3%)

321 (49.7%)

200 (31.0%)

Age (years)

62.2 ±5.3

65.3 ± 5.3

64.1 ± 5.6

7.9e-08

3.0e-03

BMI (kg/m2)

27.0 ±3.6

28.9 ±3.6

27.8 ±3.4

1.5e-06

6.5e-02

Alcohol consumption (g/day)

27.5 ±29.0

24.1 ±24.3

20.5 ±21.3

0.25

0.02

Pack yearsb

39.3 ±22.4

Quit timec (years)

23.6 ±12.6

Female (N = 595)

N (%)

70 (11.8%)

130 (21.8%)

395 (66.4%)

Age (years)

61.3 ±5.2

64.0 ±5.2

64.6 ±5.3

7.5e-04

5.9e-06

BMI (kg/m2)

27.2 ±4.5

28.7 ±5.0

28.5 ±4.6

0.029

0.02

Alcohol consumption (g/day)

6.5 ±10.9

10.0 ±12.8

7.5 ±11.1

0.042

0.48

Pack yearsb

25.8 ±15.3

Quit timec (years)

20.9 ±13.1


The study characteristics of KORA S4 are shown separately for current, former and never smokers. Values are shown as mean ±SD when appropriate. aP-values are calculated by student's t-test; bcalculated as the number of cigarettes consumed per day × years of smoking/20; c the time till the survey is conducted since the person has stopped smoking. BMI: body mass index.

Xu et al. BMC Medicine 2013 11:60   doi:10.1186/1741-7015-11-60

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