Table 1. Mean prevalence of infectious pancreatic necrosis virus by region for all 1996–2001 data, and χ2 probability that prevalence is significantly different from the all-Scotland mean.
Region | Saltwater | Freshwater | ||
---|---|---|---|---|
% Prevalence | χ2 p | % Prevalence | χ2p | |
All Scotland | 49.6 | N/A | 10.6 | N/A |
North | 41.1 | 0.001 | 5.5 | 0.1 |
South | 55.5 | – | 11.1 | – |
Shetland | 77.0 | 0.001 | 35.3 | 0.001 |
Orkney | 48.5 | – | 6.7 | – |
Outer Hebrides | 31.3 | 0.001 | 6.7 | 0.1 |