Table 3

Association between socioeconomic status and spirometry in patients < 65 years
Under 65 years Men Women All
Crude OR (95% CI) Adjusted OR (95% CI) Crude OR (95% CI) Adjusted OR (95% CI) Crude OR (95% CI) Adjusted OR (95% CI)
p-value p-value p-value
Age (increasing) 1.01 (1.01-1.01) - 1.01 (1.01-1.01) - 1.01 (1.01-1.01) -
P < 0.001 P < 0.001 P < 0.001
Gender - - - - 0.83 (0.79-0.87) -
P < 0.001
High severity
No 1 - 1 - 1 -
Yes 6.19 (5.57-6.88) - 6.89 (6.25-7.60) - 6.57 (6.11-7.06) -
P < 0.001 P < 0.001 P < 0.001
Highest attained education
  <10 1 1 1 1 1 1
  10-12 1.03 (0.95-1.11) 1.04 (0.95-1.13) 0.96 (0.89-1.03) 1.00 (0.92-1.08) 0.99 (94–1.05) 1.01(0.95-1.08)
P = 0.534 P = 0.413 P = 0.262 P = 0.929 p = 0.815 p = 0.679
  >12 0.88 (0.80-0.97) 0.92 (0.83-1.03) 0.82 (0.75-0.89) 0.86 (0.78-0.94) 0.84 (0.78-0.89) 0.88 (0.82-0.95)
P = 0.012 P = 0.137 P < 0.001 P = 0.001 P < 0.001 P < 0.001
Income (quartiles)
  1st 1 1 1 1 1 1
  2nd + 3rd 1.16 (1.05-1.28) 1.18 (1.06-1.30) 1.08 (0.99-1.18) 0.99 (0.90-1.09) 1.12 (1.05-1.19) 1.08 (1.00-1.13)
P = 0.002 P = 0.002 P = 0.079 P = 0.882 p = 0.001 p = 0.039
  4th 1.16 (1.05-1.29) 1.12 (1.00-1.26) 1.14 (1.04-1.25) 1.00 (0.89-1.11) 1.16 (1.08-1.24) 1.06 (0.98-1.14)
P = 0.005 P = 0.052 P = 0.007 P = 0.981 P < 0.001 p = 0.177
Labour market status
  Working 1 1 1 1 1 1
  Retirement pension 1.69 (1.41-2.02) 1.20 (0.98-1.48) 1.47 (1.26-1.71) 1.07 (0.89-1.27) 1.54 (1.37-1.73) 1.12 (0.98-1.28)
P < 0.001 P = 0.082 P < 0.001 P = 0.475 P < 0.001 p = 0.091
  Unemployed 0.99 (0.90-1.09) 0.82 (0.73-0.91) 1.09 (1.00-1.19) 0.91 (0.83-1.00) 1.04 (0.97-1.10) 0.87 (0.81-0.93)
P = 0.849 P < 0.001 P = 0.045 P = 0.049 p = 0.272 P < 0.001
Cohabitation
Married/Cohabiting 1 1 1 1 1 1
Living alone 1.01 (0.94-1.09) 0.99 (0.91-1.07) 1.03 (0.96-1.10) 1.03 (0.95-1.11) 1.02 (0.97-1.07) 1.01 (0.95-1.07)
P = 0.703 P = 0.752 P = 0.438 P = 0.492 p = 0.423 p = 0.762

Adjusted for gender, age and severity.

Koefoed et al.

Koefoed et al. BMC Public Health 2013 13:580   doi:10.1186/1471-2458-13-580

Open Data