| Title | Description | Host | Host Type | Outcomes |
|---|---|---|---|---|
| Anthelmintics use | Use vs no use. No further specification | Chicken | Layers | 1 |
| Farmer changing clothes | Shoes and overall vs none | Chicken | Layers | 1 |
| Pigs | Presence of pigs | Chicken | Layers | 1 |
| Disinfection of stable | By farmer vs specialist involved | Chicken | Layers | 1 |
| Other poultry production | Yes vs no | Chicken | Layers | 1 |
| Cats | Presence of cats on farm vs none | Chicken | Layers | 2 |
| Water supply | Private vs public | Chicken | Layers | 1 |
| Flock size | >4001 hens vs 2000 and less | Chicken | Layers | 10 |
| Feed additives | Use vs no use. No further specification | Chicken | Layers | 1 |
| Farmer changing clothes | Shoes vs none | Chicken | Layers | 1 |
| Employees | 3 people and less | Chicken | Layers | 2 |
| Feed additives | Yes vs no | Chicken | Layers | 1 |
| Flock size | 2001-4000 hens vs 2000 and less | Chicken | Layers | 10 |
| Pigs | Yes vs no | Chicken | Layers | 1 |
| Housing type | Free-range vs outdoor scratching area | Chicken | Layers | 9 |
| Farmer changing clothes | Overalls vs none | Chicken | Layers | 1 |
| Weeks on farm | Chickens on farm for > 52 weeks or 52 and fewer weeks | Chicken | Layers | 1 |
| Housing type | Organic vs outdoor scratching area | Chicken | Layers | 9 |
| Housing type | Indoor vs outdoor scratching area | Chicken | Layers | 9 |
| Sheep | Yes vs no | Chicken | Layers | 1 |
| Disinfection of stable | None vs specialist involved | Chicken | Layers | 2 |
| Wash basin | Yes vs no - near entrance | Chicken | Layers | 2 |
| Egg boxes | Reused vs new | Chicken | Layers | 2 |