Table 6

Comparability of study areas in zones A, B, and C and living circumstances (%)

Respondents (n)153914641485
Socioeconomic characteristics:
 No access to a car455351
 Population stability, same address  for most of life575859
Occupational exposure:
 Worked in dusty industry for most of working life:
 Smoking history:
  Current smokers:
  Duration of years smoked (smokers only):
Indoor air pollution exposure:
 Gas cooker736974
 Gas or coal fire424048
Causes of worry or stress over past year:
 Air pollution26108
 Smells outside1764
  • 6-150 Zone: A=near; B=intermediate; C=far.