Table 1 Basic descriptive statistics of 46 study herds raising finishing pigs in Finland
From: Herd-level risk factors for chronic pleurisy in finishing pigs: a case-control study
Variable | n | Mean | SD | Median | Min | Max |
|---|---|---|---|---|---|---|
No. of finishing pigs* | ||||||
All herds | 46 | – | – | 730 | 250 | 5400 |
Control herds | 25 | – | – | 500 | 250 | 1100 |
Case herds | 21 | – | – | 1200 | 300 | 5400 |
No. of finishing pig compartments | 46 | – | – | 1 | 22 | |
No. of finishing pigs/compartment | 46 | 231.3 | 100.9 | – | – | – |
No. of finishing pigs/pen | 46 | 10.6 | 2.8 | – | – | – |
Piggery constructed (years ago) | 41 | – | – | 14 | 1 | 62 |
Piggery reconstructed (years ago) | 13 | – | – | 7 | 0 | 27 |
No. of caretakers (/1000 finishing pigs) | 46 | – | – | 2.5 | 0.3 | 7.3 |