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Table 1 Estimated prevalence of smoking by age group and birth cohort

From: Trends in the prevalence of smoking in Portugal: a systematic review

 

Estimated prevalence of smoking (%) and 95% confidence intervals *

 

Women

Men

 

1988†

1998†

2008†

1988†

1998†

2008†

Age group

   ≤ 30 years

12.4 (8. 3 to 16.5)

14.4 (12.0 to 16.9)

15.9 (12.4 to 19.3)

41.8 (30.6 to 52.9)

35.3 (28.7 to 41.9)

28.8 (18.0 to 39.7)

   31 – 50 years

4.6 (3.0 to 6.3)

10.5 (9.4 to 11.6)

16.4 (15.7 to 17.2)

39.3 (32.2 to 46.4)

36.9 (32.9 to 40.8)

34.4 (27.4 to 41.5)

   51 – 70 years

0.1 (0.0 to 2.4)

2.3 (1.0 to 3.5)

4.5 (2.2 to 6.7)

24.8 (18.7 to 30.9)

20.9 (15.9 to 25.9)

16.9 (12.2 to 21.6)

   ≥ 71 years

0.1 (0.0 to 0.7)

0.5 (0.2 to 1.0)

0.9 (0.0 to 2.1)

15.1 (10.9 to 19.3)

9.9 (7.2 to 12.6)

4.6 (2.4 to 6.8)

Birth cohort

   ≤ 1926

0.3 (0.0 to 1.0)

0.5 (0.1 to 1.0)

0.0 (0.0 to 1.2)

15.5 (8.5 to 22.5)

7.3 (1.5 to 13.1)

6.8 (0.0 to 19.3)

   1927 – 1946

0.6 (0.0 to 2.8)

1.5 (0.3 to 2.6)

2.3 (0.3 to 4.3)

26.1 (14.3 to 37.8)

18.3 (12.3 to 24.3)

10.5 (0.0 to 21.2)

   1947 – 1959

6.3 (0.0 to 17.3)

7.1 (0.2 to 14.0)

7.9 (0.0 to 19.9)

37.3 (3.1 to 71.4)

37.0 (8.3 to 65.8)

17.5 (0.0 to 57.0)

   ≥ 1960

12.0 (9.3 to 14.7)

13.9 (12.5 to 15.3)

15.9 (13.8 to 18.1)

42.5 (34.6 to 50.4)

37.1 (33.0 to 41.1)

31.6 (25.4 to 37.9)

  1. * Prevalence estimated from sex-specific linear regression model, for each age group and birth cohort;
  2. † The years 1988 and 2008 were selected because correspond approximately to the first year and last years with available data, respectively, and 1998 because is the mid-point of this period.