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. 2003 Apr;9(4):455–460. doi: 10.3201/eid0904.020311

Table 2. Trends in annual average prevalence of infectious pancreatic necrosis virus for all Scotland and by regions with regression 90% confidence intervals, probability, and r2a.

Region % Annual increase 90% CI p r2
Marine sites




   All Scotland
6.2
±3.1
0.012
0.82
   South Mainland
-3.4
±6.2
0.306
0.26
   North Mainland
8.7
±5.4
0.026
0.75
   Shetland
7.4
±3.7
0.014
0.82
   Orkney
11.5
±3.7
0.003
0.91
   Outer Hebrides
10.6
±7.1
0.013
0.71
Freshwater Sites




    All Scotland
2.0
±1.5
0.051
0.66
    South Mainland
1.9
±1.3
0.039
0.69
North Mainland
0.4
±1.9
0.663
0.05
Shetland
6.5
±3.9
0.026
0.75
Orkney
2.4
±2.3
0.097
0.54
    Outer Hebrides 3.0 ±2.2 0.041 0.69

aIPNV, infectious pancreatic necrosis virus; CI, confidence intervals; p, probability; r2, coefficient of determination for bivariate analysis.