Table 4

Association between socioeconomic status and spirometry in patients ≥ 65 years
Over 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)
Age (increasing) 0.97 (0.96-0.98) - 0.96 (0.95-0.97) - 0.96 (0.96-0.97) -
P < 0.001 P < 0.001 P < 0.001
Gender - - - 0.77 (0.72-0.83) -
P < 0.001
High severity
No 1 - 1 - 1 -
Yes 3.65 (3.23-4.11) - 4.09 (3.63-4.60) - 3.89 (3.57-4.23) -
P < 0.001 P < 0.001 P < 0.001
Highest attained education
  <10 1 1 1 1 1 1
  10-12 1.14 (1.01-1.28) 1.09 (0.96-1.23) 1.14 (1.01-1.29) 1.10 (0.97-1.26) 1.19 (1.10-1.29) 1.10 (1.00-1.20)
p = 0.028 p = 0.197 P = 0.028 P = 0.130 P < 0.001 p = 0.042
  >12 1.00 (0.85-1.17) 0.98 (0.83-1.16) 1.12 (0.95-1.33) 1.13 (0.95-1.35) 1.09 (0.97-1.22) 1.05 (0.93-1.18)
p = 0.967 p = 0.816 P = 0.166 P = 0.181 p = 0.143 p = 0.451
Income (quartiles)
  1st 1 1 1 1 1 1
  2nd + 3rd 1.16 (1.03-1.31) 1.11 (0.98-1.27) 1.18 (1.06-1.32) 1.08 (0.95-1.22) 1.20 (1.10-1.30) 1.10 (1.00-1.20)
p = 0.017 p = 0.113 P = 0.003 P = 0.241 P < 0.001 p = 0.047
  4th 1.10 (0.94-1.28) 1.08 (0.91-1.29) 1.34 (1.13-1.58) 1.19 (0.99-1.42) 1.24(1.11-1.39) 1.12 (0.99-1.27)
p = 0.242 p = 0.364 P = 0.001 P = 0.070 P < 0.001 p = 0.069
Labour market status
  Working 1 1 1 1 1 1
  Retirement pension 0.90 (0.73-1.11) 1.01 (0.80-1.26) 1.15 (0.83-1.60) 1.40 (0.99-1.97) 0.91 (0.76-1.08) 1.13 (0.94-1.36)
p = 0.307 p = 0.964 P = 0.386 P = 0.059 p = 0.269 p = 0.204
  Unemployed 0.73 (0.42-1.27) 0.65 (0.37-1.16) 1.25 (0.69-2.26) 0.94 (0.50-1.75) 0.86 (0.58-1.28) 0.75 (0.49-1.13)
p = 269 p = 0.146 P = 0.463 P = 0.841 p = 0.450 p = 0.169
Cohabitation
Married/Cohabiting 1 1 1 1 1 1
Living alone 0.79 (0.71-0.89) 0.78 (0.69-0.88) 0.80 (0.72-0.89) 0.91 (0.81-1.02) 0.76 (0.70-0.82) 0.84 (0.77-0.91)
P < 0.001 P < 0.001 P < 0.001 P = 0.119 P < 0.001 P < 0.001

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