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Table 1 A summary of patterns and hypotheses to explain the regional variation of tick-borne disease cases in eastern and western Norway. All numbers are means for the entire data period (see other tables for detail). Densities are relative to total land area (in km2 for 2012)
| Patterns/mechanisms | Eastern Norway | Pattern/conclusion | Western Norway | Z or t | P |
|---|---|---|---|---|---|
| Cases (sum 2006–2015) | |||||
| Lyme disease | 96 | < | 133 | 2.09 | 0.041 |
| Anaplasmosis sheep | 0 | < | 194 | ||
| Anaplasmosis cattle | 0 | < | 134 | ||
| Babesiosis cattle | 3 | < | 214 | 2.97 | 0.004 |
| Population sizes | |||||
| Humans | 648,071 | > | 107,542 | -4.50 | < 0.001 |
| Sheep (registered ewes) | 4324 | < | 24,728 | 6.05 | < 0.001 |
| Cattle (outfield grazing) | 4963 | < | 22,697 | 6.91 | < 0.001 |
| Population densities (mean) | |||||
| Humans | 74.76 | > | 5.73 | 4.31 | < 0.001 |
| Sheep | 0.49 | < | 1.32 | -3.30 | 0.002 |
| Cattle | 0.56 | < | 1.21 | -2.88 | 0.006 |
| Incidence (mean) | |||||
| Lyme disease (per 100,000) | 1.49 | < | 12.41 | 6.12 | < 0.001 |
| Anaplasmosis sheep (per 10,000) | 0 | < | 7.90 | ||
| Anaplasmosis cattle (per 10,000) | 0 | < | 5.83 | ||
| Babesiosis cattle (per 10,000) | 0.72 | < | 9.32 | 4.38 | < 0.001 |
| Nymphal tick abundance (per 20 m2) | 1.36 | < | 5.78 | 2.08 | 0.038 |
| Pathogen prevalence in nymphs | |||||
| B. burgdorferi (s.l.) | 11.4% | ≥ | 11.3% | -1.364 | 0.172 |
| A. phagocytophilum | 1.0% | < | 4.5% | -5.346 | < 0.001 |
