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Table 4 Details of KELA serology test results with signalment and historical information, and odd ratios

From: Searching for Lyme borreliosis in Australia: results of a canine sentinel study

Group

Seropositive KELA units > 100 (n)a

Seronegative KELA units < 100 (n)a

Percent positive  (95% CI)

OR (95% CI)

1

70

310

18.4 (14.7–22.7)

1.0 (0.5–2.0)

2

11

49

18.3 (9.5–30.4)

1.0

3

32

52

38.1 (27.7–49.3)

2.7 (1.3–6.0)

4

9

21

30.0 (14.7–49.4)

1.9 (0.7–5.3)

Sex

 Male

67

212

24.0 (19.1–29.5)

1.4 (0.9–2.2)

 Female

42

191

18.0 (13.3–23.6)

1.0

Tick history

 Yes

91

303

23.1 (19.0–27.6)

1.2 (0.7–2.0)

 No

20

78

20.4 (12.9–29.7)

1.0

Tick paralysis

 Yes

61

146

29.5 (23.4–36.2)

2.0 (1.3–3.1)

 No

49

233

17.4 (13.1–22.3)

1.0

Flea history

 Yes

46

198

18.9 (14.1–24.3)

1.0 (0.6–1.8)

 No

24

106

18.5 (12.2–26.2)

1.0

Ectoparasiticide use

 Yes

57

242

19.1 (14.8–24.0)

1.4 (0.7–2.9)

 No

10

60

14.3 (7.1–24.7)

1.0

Travel history

 Yes

50

178

21.9 (16.7–27.9)

1.6 (1.0–2.7)

 Stayed at home

28

161

14.8 (10.1–20.7)

1.0

Total

122b

432

22.0 (18.6–25.7)

 
  1. aData not available from every individual (some incomplete survey responses)
  2. bOne data point (vaccinated dog) has been removed from this analysis