Prevalence | ||||||
---|---|---|---|---|---|---|
Baseline | Follow-up | |||||
Respiratory health outcome | all | Ruhr area | rural areas | all | Ruhr area | rural areas |
Chronic Bronchitis by physician's diagnosis ^{a} |
N = 2073 (8.2%) |
N = 1167 (9.3%) |
N = 905 (6.6%) |
N = 2032 (11.6%) |
N = 1125 (13.6%) |
N = 90782 (9.0%) |
Chronic cough ^{a} |
N = 2110 (20.6%) |
N = 1175 (22.7%) |
N = 935 (18.0%) |
N = 1947 (26.5) |
N = 1079 (27.9%) |
N = 868 (24.7%) |
Chronic cough with phlegm production ^{a} |
N = 2099 (9.5%) |
N = 1168 10.1% |
N = 931 8,8% |
N = 1979 (13.3%) |
N = 1098 (13.5%) |
N = 890 (13.2%) |
Mild COPD ^{b} FEV _{ 1 } /FVC < 0.7 |
N = 384 (8.6%) |
N = 201 10.5% |
N = 183 6.6% |
N = 347 (18.2%) |
N = 179 (12.9%) |
N = 163 (22.7%) |
Moderate COPD ^{b} FEV _{ 1 } /FVC< 0.7 and FEV _{ 1 } < 80% predicted |
N = 384 (3.7%) |
N = 201 5.0% |
N = 183 2.2% |
N = 347 (6.6%) |
N = 179 (5.6%) |
N = 163 (8.0%) |