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Table 1 Sample characteristics.

From: Genetic analyses of smoking initiation, persistence, quantity, and age-at-onset of regular cigarette use in Brazilian families: the Baependi Heart Study

 

Non-smokers

Former smokers

Current smokers

Overall

 

%

n

%

n

%

n

n

Sex

male

34.5

349

58.2

239

53.7

146

734

 

female

65.5

662

41.8

172

46.3

126

960

Age

18-24

20.0

202

5.6

23

9.2

25

250

 

25-39

31.3

316

18.7

77

24.3

66

459

 

40-54

22.6

229

44.1

181

41.2

112

522

 

55+

26.1

264

31.6

130

25.3

69

463

Cigarettes smoked per day

1-10

NA

NA

51.3

211

51.8

141

352

 

11-20

NA

NA

30.7

126

34.2

93

219

 

21-30

NA

NA

4.9

20

5.1

14

34

 

31+

NA

NA

10.2

42

0.4

1

43

 

no answer

NA

NA

2.9

12

8.5

23

35

  1. Age: age at the time of interview; NA: not available.