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. 2016 Jan 22;113(3):23–30. doi: 10.3238/arztebl.2016.0023

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