Age | Model | Males | Per cent | Females | Per cent | ||||
---|---|---|---|---|---|---|---|---|---|
SII coefficient | 95% CI | Explained | SII coefficient | 95% CI | Explained | ||||
n=1046 | n=1340 | ||||||||
18–39 | Survey year, age* | −0.29 | −0.61 | 0.03 | – | −0.21 | −0.50 | 0.08 | – |
Height†, parental social class | −0.15 | −0.52 | 0.23 | 49 | −0.12 | −0.45 | 0.22 | 45 | |
Smoking | −0.27 | −0.59 | 0.05 | 8 | −0.17 | −0.45 | 0.12 | 21 | |
Physical activity, weight | −0.29 | −0.60 | 0.02 | 1 | −0.22 | −0.51 | 0.07 | −4 | |
Second-hand smoke, urban/rural area | −0.29 | −0.58 | −0.01 | 0 | −0.23 | −0.52 | 0.05 | −11 | |
All‡ | −0.16 | −0.49 | 0.16 | 43 | −0.11 | −0.44 | 0.22 | 46 | |
n=1616 | n=2015 | ||||||||
40–64 | Survey year, age* | −0.45 | −0.67 | −0.23 | – | −0.30 | −0.49 | −0.12 | – |
Height†, parental social class | −0.18 | −0.50 | 0.14 | 59 | −0.14 | −0.47 | 0.19 | 54 | |
Smoking | −0.38 | −0.61 | −0.14 | 15 | −0.24 | −0.40 | −0.08 | 21 | |
Physical activity, weight | −0.44 | −0.67 | −0.22 | 1 | −0.29 | −0.47 | −0.11 | 4 | |
Second-hand smoke, urban/rural area | −0.36 | −0.62 | −0.11 | 18 | −0.27 | −0.43 | −0.10 | 12 | |
All‡ | −0.11 | −0.45 | 0.23 | 76 | −0.07 | −0.42 | 0.27 | 75 | |
n=837 | n=1074 | ||||||||
65 and over | Survey year, age* | −0.46 | −0.89 | −0.04 | – | −0.21 | −0.56 | 0.14 | – |
Height†, parental social class | −0.42 | −0.98 | 0.13 | 8 | −0.22 | −0.57 | 0.13 | −5 | |
Smoking | −0.41 | −0.83 | 0.01 | 12 | −0.19 | −0.52 | 0.15 | 11 | |
Physical activity, weight | −0.44 | −0.86 | −0.01 | 6 | −0.19 | −0.53 | 0.15 | 11 | |
Second-hand smoke, urban/rural area | −0.35 | −0.79 | 0.09 | 25 | −0.18 | −0.55 | 0.18 | 13 | |
All‡ | −0.29 | −0.86 | 0.29 | 37 | −0.17 | −0.53 | 0.18 | 18 |
*Includes quadratic term for age representing the difference in FEV1 (in L) of the most disadvantaged and most advantaged individuals according to social class.
†Includes quadratic term for height.
‡All covariates: survey year, age, height, parental social class, smoking, physical activity, weight, second-hand smoke and urban/rural area.
FEV1, forced expiratory volume in 1 s; SII, slope index of inequality.