Table 1 Risk factors, odds ratios and confidence intervals associated with positive results for T. cruzi in 370 owned dogs of Merida, Yucatan

 Female

278

34

12.23^a

1.03

0.47-2.26

0.94

 Male

92

11

11.95^a

1

 ≥2

208

31

14.9^a

1.85

0.9-3.81

0.06

 <2

162

14

8.64^a

1

 A (northwest)

118

12

10.16^a

0.45

0.19-1.06

 B (northeast)

97

8

8.2^a

0.38

0.15-0.98

 C (southwest)

85

11

12.94^ab

0.69

0.28-1.68

 D (southeast)

70

14

20^b

1

0.05

Total

370

45

12.16