eTable 2. Trends in daily smoking among 11 to 17 year olds by age and sex*.
| Age | Boys | Girls | Total | |||
|---|---|---|---|---|---|---|
| KiGGS baseline study (2003–2006) % (95% CI) | KiGGS Wave 1 (2009–2012) % (95% CI) | KiGGS baseline study (2003–2006) % (95% CI) | KiGGS Wave 1 (2009–2012) % (95% CI) | KiGGS baseline study (2003–2006) % (95% CI) | KiGGS Wave 1 (2009–2012) % (95% CI) | |
| 11 years | 0.2 (0.0; 1.5) | – | – | – | 0.1 (0.0; 0.8) | – |
| 12 years | 0.1 (0.0; 0.5) | 0.3 (0.0; 1.8) | 0.3 (0.1; 1.3) | – | 0.2 (0.1; 0.6) | 0.1 (0.0; 0.9) |
| 13 years | 3.7 (2.3; 5.9) | 2.1 (0.7; 5.9) | 2.5 (1.4; 4.4) | 1.5 (0.3; 7.4) | 3.1 (2.2; 4.4) | 1.8 (0.7; 4.4) |
| 14 years | 6.8 (4.6; 10.1) | 1.5 (0.7; 3.4) | 11.1 (7.9; 15.3) | 1.7 (0.4; 6.8) | 8.9 (6.8; 11.6) | 1.6 (0.7; 3.7) |
| 15 years | 16.8 (12.9; 21.6) | 5.6 (2.9; 10.5) | 22.2 (17.6; 27.6) | 7.9 (4.6; 13.3) | 19.4 (16.5; 22.7) | 6.8 (4.5; 10.0) |
| 16 years | 30.4 (25.6; 35.7) | 10.8 (6.5; 17.2) | 26.5 (21.4; 32.3) | 8.9 (5.4; 14.3) | 28.5 (25.0; 32.2) | 9.8 (7.1; 13.5) |
| 17 years | 35.5 (30.0; 41.3) | 18.6 (13.7; 24.7) | 29.2 (23.9; 35.2) | 16.9 (12.0; 23.3) | 32.4 (28.4; 36.7) | 17.8 (14.1; 22.1) |
| Total | 13.4 (12.0; 15.0) | 5.5 (4.4; 6.9) | 13.2 (11.6; 14.9) | 5.3 (4.2; 6.8) | 13.3 (12.2; 14.5) | 5.4 (4.7; 6.3) |
*Results of the KiGGS baseline study and KiGGS Wave 1 adjusted for the 2009/2010 population structure. 95% CI, 95% confidence interval