Table 1

Baseline characteristics of ATBC Study participants initiating smoking at ≤ 20 years

Characteristic

Number of participants


All participants

21657

Age (years)

50–54

7778

55–59

6908

60–64

5058

65–69

1913

Cigarettes per day at baseline

5–19

7295

20–29

10259

≥ 30

4103

BMI (kg/m2) *

≤ 19

700

20–24

7781

25–29

9902

≥ 30

3260

Education (years at school)

≤ 6

17253

7–9

2956

≥ 10

1448

Residential neighborhood during the last 20 years *

City (> 50,000 inhab.)

9305

Town

4667

Village

3160

Countryside

4519


* BMI was missing for 14 and residential neighborhood for 6 participants.

Hemilä and Kaprio Nutrition Journal 2008 7:33   doi:10.1186/1475-2891-7-33

Open Data