Table 1 Characteristics of the study population in rural and in urban areas in 2008/2009
From: Air pollution and subclinical airway inflammation in the SALIA cohort study
Total area (N = 402) | Rural area (N = 190) | Urban area (N = 212) | p-Valuea | |
|---|---|---|---|---|
Age (means (sd)) | 74.1 (2.6) | 74.0 (2.5) | 74.2 (2.6) | 0.3259 |
Years of schooling (%) | 0.8655 | |||
<10 | 17.0 | 18.1 | 16.1 | |
=10 | 51.0 | 50.5 | 51.2 | |
>10 | 32.0 | 31.4 | 32.7 | |
Smoking (%) | 0.0125 | |||
Current | 3.0 | 1.1 | 4.7 | |
Former | 15.7 | 12.1 | 18.9 | |
Never | 81.3 | 86.8 | 76.4 | |
Current passive smoking (%) | 38.6 | 36.8 | 40.3 | 0.4797 |
Exposure to indoor mould (%) | 12.7 | 8.9 | 16.0 | 0.0330 |
Asthmab (%) | 9.7 | 8.5 | 10.9 | 0.4214 |
COPDb (%) | 3.2 | 3.1 | 3.3 | 0.9351 |
Chronic bronchitisb (%) | 11.0 | 11.6 | 10.5 | 0.7109 |
Change of home address (%) | 14.2 | 11.1 | 17.0 | 0.0889 |