Table 2 Univariate analyses of hosts, clustering and ecological associations with Chagas Sero K-SeT (Pampa del Indio)

Humans

Age

292

199 (68.2)

1.00 (0.98–1.01)

0.62

Ethnicity

 Creole

68

50 (73.5)

1

 Qom

224

149 (66.5)

0.72 (0.38–1.29)

0.28

Gender

 Female

144

100 (69.4)

1

 Male

148

99 (66.9)

0.89 (0.54–1.46)

0.64

Study area

 II

212

136 (64.2)

1

 IV

80

63 (78.8)

2.07 (1.15–3.88)

0.02*

Presence of T. infestans in the household

 No

59

43 (72.9)

1

 Yes

233

156 (67)

0.75 (0.39–1.40)

0.38

Cohabitant with reactive RDT

 No

146

102 (69.9)

1

 Yes

146

97 (66.4)

0.85 (0.52–1.40)

0.53

Dogs

Function

 Guardian

41

26 (63.4)

1

 Hunting

32

23 (71.9)

1.47 (0.49–4.59)

0.47

Type of hunting

 Sylvatic animals

34

23 (67.6)

1

 Not hunting

16

11 (68.8)

1.05 (0.25–4.84)

1.00

Place of birth

 In study area

52

36 (69.2)

1

 Not in study area

12

9 (75)

1.33 (0.28–8.63)

1.00

Ethnicity of the household

 Creole

57

31 (54.4)

1

 Qom

22

20 (90.1)

8.39 (1.73–78.92)

0.00*

Born after mass spraying

 Yes

5

1 (20)

1

 No

73

50 (68.5)

8.70 (0.78–436.49)

0.05*

Place of sleeping

 Outside of the domicile

18

12 (66.7)

1

 Inside of the domicile

14

12 (85.7)

3.00 (0.41–35.07)

0.41