Table 1.
Association between the presence of farm animals within 1 km from the home address and CAP
| Controls | Any CAP | CAP with unknown aetiology | CAP caused by C. burnetii | |
|---|---|---|---|---|
| n | 1096 | 400 | 130 | 50 |
| One or more farms within 1 km, n (%) | 687 (62.7) | 237 (59.3) | 72 (55.4) | 33 (66.0) |
| Presence of farm animals within 1 km, n (%) | ||||
| Swine | 455 (41.5) | 156 (39.0) | 50 (38.5) | 25 (50.0) |
| Poultry | 259 (23.6) | 99 (24.8) | 32 (24.6) | 17 (34.0)* |
| Cattle | 593 (54.1) | 213 (53.3) | 65 (50.0) | 29 (58.0) |
| Goats | 170 (15.5) | 74 (18.5) | 23 (17.7) | 9 (18.0) |
| Sheep | 189 (17.2) | 81 (20.3) | 30 (23.1) | 15 (30.0)** |
Residential addresses were geocoded for 400/408 patients with CAP.
*P < 0.10; **P < 0.05, CAP cases versus controls.
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