Table 2. Trends in passive smoke exposure among 11 to 17 year olds by social status (non-smoking adolescents only). Prevalences and age-adjusted ORs (calculated using binary logistic regression) with 95% CI and p-values*.
| Passive smoke exposure (several times a week or daily) | Passive smoke exposure (daily) | |||||||
|---|---|---|---|---|---|---|---|---|
| KiGGS baseline study (2003–2006) |
KiGGS Wave 1 (2009–2012) |
KiGGS baseline study (2003–2006) |
KiGGS Wave 1 (2009–2012) |
|||||
| % (95% CI) | OR (95% CI) p-value |
% (95% CI) | OR (95% CI) p-value |
% (95% CI) | OR (95% CI) p-value |
% (95% CI) | OR (95% CI) p-value |
|
| Boys | ||||||||
| Social status | ||||||||
| –low | 43.0 (36.8; 49.5) |
3.25 (2.29; 4.62) p<0.001 |
26.1 (19.9; 33.4) |
4.33 (2.53; 7.41) p<0.001 |
30.7 (24.7; 37.4) |
4.53 (2.94; 6.98) p<0.001 |
16.6 (11.3; 23.8) |
7.02 (3.33; 14.82) p<0.001 |
| –middle | 35.3 (32.1; 38.7) |
2.25 (1.73; 2.93) p<0.001 |
19.6 (16.8; 22.7) |
3.14 (2.04; 4.83) p<0.001 |
19.9 (17.2; 22.8) |
2.50 (1.77; 3.54) p<0.001 |
9.5 (7.4; 12.1) |
3.84 (2.00; 7.37) p<0.001 |
| –high | 20.4 (17.0; 24.2) |
Ref. | 7.4 (5.2; 10.4) |
Ref. | 9.1 (6.8; 12.2) |
Ref. | 2.7 (1.5; 4.6) |
Ref. |
| Girls | ||||||||
| Social status | ||||||||
| –low | 48.5 (42.4; 54.5) |
2.94 (2.07; 4.18) p<0.001 |
26.8 (20.2; 34.4) |
3.44 (2.12; 5.58) p<0.001 |
37.9 (32.1; 44.0) |
3.56 (2.44; 5.19) p<0.001 |
16.5 (11.9; 22.6) |
3.94 (2.14; 7.24) p<0.001 |
| –middle | 36.8 (33.7; 40.0) |
1.75 (1.36; 2.25) p<0.001 |
19.0 (16.2; 22.2) |
2.31 (1.59; 3.34) p<0.001 |
23.3 (20.5; 26.4) |
1.77 (1.30; 2.41) p<0.001 |
10.3 (8.0; 13.0) |
2.38 (1.37; 4.11)
p<0.01 |
| –high | 25.6 (21.6; 30.2) |
Ref. | 9.1 (6.9–11.8) |
Ref. | 14.7 (11.5–18.6) |
Ref. | 4.5 (2.9; 6.8) |
Ref. |
| Total | ||||||||
| Social status | ||||||||
| –low | 45.7 (41.5; 50.0) |
3.09 (2.41; 3.97) p<0.001 |
26.4 (21.9; 31.5) |
3.84 (2.64; 5.57) p<0.001 |
34.3 (30.2; 38.6) |
3.96 (3.01; 5.20) p<0.001 |
16.6 (12.9; 21.0) |
5.14 (3.17; 8.31) p<0.001 |
| –middle | 36.0 (33.7; 38.5) |
1.98 (1.66; 2.36) p<0.001 |
19.3 (17.2; 21.5) |
2.67 (1.99; 3.60) p<0.001 |
21.5 (19.4; 23.8) |
2.06 (1.63; 2.61) p<0.001 |
9.9 (8.3; 11.8) |
2.94 (1.94; 4.45) p<0.001 |
| –high | 23.0 (20.5; 25.7) |
Ref. | 8.2 (6.5; 10.3) |
Ref. | 11.9 (9.9; 14.2) |
Ref. | 3.6 (2.6; 4.9) |
Ref. |
*Results of the KiGGS baseline study and KiGGS Wave 1 adjusted for the 2009/2010 population structure.
95% CI, 95% confidence interval; OR, odds ratio; Ref., reference group.
Figures in bold indicate statistically significant results