Selection of recent epidemiological studies of hypersensitivity pneumonitis, focusing on differences in prevalence rates in relation to diagnostic methods and type of exposure
| Author [ref.] | Location | Subjects studied n | Prevalence (%) | ||
| Q | Q + S | Q + S + further tests | |||
| Farmers | |||||
| Babbott, 16 | Vermont, USA | 210 | 0.48 | ||
| Gruchow, 17 | Wisconsin, USA | 1444 | 0.42 | ||
| Marcer, 18 | Italy | 2932 | 2.6 | 1.2 | |
| Saia, 19 | Italy | 249 | 1.4 | ||
| Malmberg, 20 | Sweden | 512 | 19* | ||
| Depierre, 21 | France | 1763 | 15.3 | 4.4 | ∼0.5–1 |
| Malmberg, 22 | Sweden | 6702 | ∼0.25 | ||
| Stanford, 23 | Ireland | 380 | 10.4 | 1.7 | 0.5 |
| Vohlonen, 24 | Finland | 6790 | 1.7 | ||
| Dalphin, 25 | France | 5703 | 1.4 | ||
| Pigeon breeders | |||||
| Banham, 26 | Scotland | 277 | 10.4 | 7.5 | |
| Bourke, 27 | Scotland | 208 | 31 | ||
| De Castro, 28 | Canary Islands | 343 | 8 | 6.4 | |
| Tobacco industry | |||||
| Huuskonen, 29 | Finland | 57 | 26 | 14 | 5.3 |
| Isocyanates | |||||
| Vandenplas, 30 | Canada | 167 | 4.7 | ||
| Baur, 31 | Germany | 1780 | 0.9 | ∼0.6 | ∼0.9 |
| Nacre factory | |||||
| Orriols, 32 | Spain | 26 | ∼40–50 | 23 | ∼20 |
| Machine operators | |||||
| Bernstein, 33 | Ohio, USA | 16 | 37.5 | 37.5 | ∼31 |
Q: questionnaire
S: serology
*: febrile reactions after exposure to organic dust