Table 1 Information on the datasets and the variables considered for creating the final dataset for a study on Fasciola hepatica infection in Danish cattle herds
From: Prevalence, risk factors and spatial analysis of liver fluke infections in Danish cattle herds
Abattoir dataset | Herd information dataset | Environment dataset | Trade dataset |
|---|---|---|---|
(n = 1,499,417 cattle) | (n = 23,859 herds) | (n = 22,092 farms) | (n = 19,593 herds) |
Farm characteristics: Farm identification number; Farm coordinates | Farm characteristics: Farm identification number | Farm characteristics: Farm identification number; Farm coordinates | Trade characteristics: Purchase of an animal from another herd (0 = No, 1 = Yes); Purchase of an animal from an infected herd (0 = No; 1 = Yes; NA = Unknown4) |
Animal characteristics: Animal identification number; Sex; Date of birth; Date of Slaughter; F. hepatica status of the animal at slaughter | Count day: Herd size recording date (beginning of every calendar month from 2005 to 2013) | Environmental variables 3 (0 = Absent, 1 = Present): Streams, Wetlands; Lakeshore; Cropland; Pastures; Grasslands; Forests; Artificial surface; Recreation land; Grass; Farmland; Forest; Dry-land; Fresh-water meadows; Ocean | Animal characteristics: F. hepatica status of the animal at slaughter (0 = Negative, 1 = Positive) |
Herd Characteristics: Herd identification number; Farm type (Organic, Conventional); Production type: (Dairy, Non-dairy herds1) | Herd characteristics: Total number of bulls < 6 months of age; Total number of bulls > 6 months of age; Total number of heifers < 6 months of age; Total number of heifers > 6 months; Total number of cows; mean and median herd size2 | Herd Characteristics: Herd identification number; Median herd size |