|  |  |  |  |  | PAR% | |||
---|---|---|---|---|---|---|---|---|---|
 |  |  |  |  |  |  | Calculated by ATS |  | |
Disease Definition | Type of Exposure | Study | Sex | Age Range | Subject # Cases # | Reported | 1 | 2 | Ref. |
Chronic cough (3+ months of the year) | Dusts | Population study of six citiesin the U.S.A. | M/F | 25–74 | 8,515/1,015 | 24 | 9 | 8 | [102] |
 | Fumes/gases |  | M/F |  | 8,515/1,066 | 23 | 11 | 10 |  |
Chronic cough (cough 3+ months of the year) | Dusts, gases/fumes | PAARC-Population study of sevenFrench cities | M | 29–59 | 8,692/1,036 |  | 11 | 11 | [104] |
 | Dusts, gases/fumes |  | F |  | 7,772/407 |  | 8 | 8 |  |
Chronic bronchitis (as chronic cough and chronic phlegm) | Dusts | Population study of Cracow followed for 13 years | F | 19–70 | 1,280/175 |  | 9 | 8 | [103] |
Chronic cough | Dusts, fumes, gases | Population study of Po Delta area in North Italy | M | 18–64 | 1,027/159 |  | 15 | 18 | [106] |
Chronic cough (cough 3+ months of the year) | Gases or dusts | Population study of Hordaland county in Norway | M/F | 15–70 | 4,469/409 | 11 | 16 | 15 | [117] |
Chronic cough (cough 3+ months of the year) | Fumes/gases | Population study of three Chinese areas | M/F | 40–69 | 3,606/876 |  | 4 | 4 | [118] |
 | Dusts |  | M/F |  | 3,606/632 |  | 9 | 9 |  |
Chronic cough (cough 3+ months of the year) | Low biologic dusts | ECRHS-Population study of five Spanish areas | M/F | 20–44 | 1,735/248 |  | 6 | 8 | [105] |