Crude relative risk (RR) of death from respiratory disease by indices of education, housing, employment grade, income, and family type in 13992 females and 12400 males in the Copenhagen Centre for Prospective Population Studies
| Females | Males | |
| Education | ||
| <8 yrs | 1 | 1 |
| 8–11 yrs | 0.59 (0.44–0.79) | 0.53 (0.40–0.70) |
| >11 yrs | 0.42 (0.20–0.89) | 0.52 (0.33–0.82) |
| Housing | ||
| No central heating | 1 | 1 |
| Central heating | 0.75 (0.56–1.02)§ | 0.73 (0.56–0.94) |
| <1 Room per person | 1 | 1 |
| ≥1 Room per person | 1.16 (0.43–3.12) | 0.52 (0.32–0.86) |
| Employment grade | ||
| Managers | 1 | 1 |
| Salaried employees | 1.13 (0.55–2.29) | 1.17 (0.66–2.08) |
| Skilled labour | 1.82 (0.24–14.15) | 1.53 (0.91–2.59) |
| Unskilled labour | 1.53 (0.76–3.07) | 2.33 (1.52–3.53) |
| Outside work-force | 1.76 (0.95–3.29) | 2.37 (1.67–3.37) |
| Blue collar# | 1 | 1 |
| White collar# | 0.71 (0.43–1.15) | 0.52 (0.37–0.74) |
| Outside workforce | 1.15 (0.75–1.75) | 1.19 (0.86–1.64) |
| Gross income | ||
| Personal income | ||
| Per 50000 DKR¶ | 0.94 (0.86–1.03)ƒ | 0.81 (0.76–0.87) |
| Household income+ | ||
| Per 100000 DKR¶ | 1.00 (0.85–1.17) | 0.96 (0.76–0.97) |
| Family type | ||
| Living alone | 1 | 1 |
| Cohabitating | 0.97 (0.74–1.28) | 0.60 (0.47–0.77) |
Data are presented as RR (95% confidence interval)
#: blue-collar comprised skilled and unskilled labour
white-collar comprised managers and salaried employees including self-employed and assistant wives
¶: 8 DKR is ∼1
+: subjects living alone excluded
§: after adjustment for education, p=0.15
ƒ: after adjustment for education, p=0.88
Results from Cox regression analyses adjusted for age and cohort of origin