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Table 1 The number and proportion of elevated serum levels of allergen-specific IgE to each allergen in a database of test results from serologic allergen-specific IgE-testing in Norwegian dogs

From: Prevalence of and risk factors for increased serum levels of allergen-specific IgE in a population of Norwegian dogs

Allergen

Number

Proportion (%)

Outdoor allergens

Sheep sorrel

443

40.0

Redtop grass

415

37.5

Cocksfoot

413

37.3

Meadow fescue

405

36.6

Beech

401

36.2

Velvet grass

388

35.0

Perennial rye grass

385

34.8

Timothy grass

368

33.2

Blue grass anual

334

30.2

Ragweed

288

26.0

English plantain

278

25.1

Elm

275

24.8

Lambs quarter

261

23.6

Hazel

244

22.0

Alder

232

21.0

Oak

226

20.4

Sycamore

219

19.8

Mugwort

219

19.8

Birch

183

16.5

Nettle

136

12.3

Indoor allergens

Acarus siro

930

84.0

Dermatophagoides farinae

888

80.2

Tyrophagus putrescentiae

885

79.9

Flea saliva

29

2.6

  1. Number of samples with IgE >150 EA units, and the corresponding proportion (%) of all samples with positive results.