Table 4 Univariate (unadjusted OR) and multivariate (adjusted OR) logistic regression to identify socio-economic variables for awareness of triatomine bugs as vectors of Chagas disease

Ayoreo participants

 Age

  ≤ 40*

34.8

Reference

Reference

  41–60

65.0

3.48

1.02–12.89

3.84

1.01–16.58

  61–80

42.9

1.41

0.23–8.02

1.50

0.15–14.82

P = 0.14

P = 0.15

 Gender

  Female

29.2

Reference

Reference

  Male

65.4

4.59

1.44–16.00

4.79

1.40–18.67

P = 0.012

P = 0.016

 Education

  No formal education

40.0

Reference

Reference

  Basic or higher

50.0

1.50

0.37–6.64

1.30

0.20–9.44

P = 0.57

P = 0.78

Guaraní participants

 Age

  10–20

85.7

1.12

0.16–22.56

1.51

0.18–34.53

  21–40

82.8

0.89

0.27–3.24

0.88

0.24–3.41

  > 40^a

84.3

Reference

Reference

P = 0.97

P = 0.92

 Gender

  Female

83.6

Reference

Reference

  Male

84.6

1.08

0.32–4.27

1.07

0.28–4.68

P = 0.91

P = 0.92

 Education

  No formal education

80.0

Reference

Reference

  Basic

85.1

1.43

0.07–10.88

1.39

0.07–10.61

  Intermediate and higher^a

75.0

0.75

0.03–10.78

0.61

0.02–10.13

P = 0.74

P = 0.68

Chiquitano participants

 Age

  10–20

44.4

0.03

0.00–0.22

0.02

0.00–0.16

  21–40

88.9

0.27

0.01–1.77

0.22

0.01–1.67

  41–60

88.6

0.26

0.01–1.87

0.30

0.01–2.31

  61–80

96.8

Reference

Reference

P = 0.0071

P = 0.1

 Gender

  Female

80.6

Reference

Reference

  Male

94.8

4.40

1.31–20.13

5.05

1.25–29.97

P = 0.028

P = 0.03954

 Education

  Basic

83.9

Reference

Reference

  Intermediate and higher^a

91.4

2.04

0.68–6.92

3.64

0.96–16.50

P = 0.22

P = 0.069

Quechua participants

 Age

  10–20

50.0

Reference

Reference

  21–40

70.6

2.4

0.62–9.55

2.76

0.65–12.27

  41–60

89.5

8.5

1.51–70.24

10.64

1.73–95.18

  61–80

71.4

2.5

0.37–22.74

3.07

0.41–30.58

P = 0.16

P = 0.13

 Gender

  Female

64.9

Reference

Reference

  Male

80.0

2.17

0.76–6.60

1.82

0.54–6.36

P = 0.16

P = 0.33

 Education

  No formal education

66.7

Reference

Reference

  Basic

69.8

1.16

0.22–4.98

1.19

0.20–6.41

  Intermediate or higher

90.0

4.5

0.45–103.84

5.69

0.46–151.45

P = 0.44

P = 0.37

La Paz participants

 Age

  10–20

15.4

0.05

0.00–0.32

0.02

0.00–0.22

  21–40

40.0

0.17

0.02–0.76

0.14

0.01–1.00

  41–60

61.9

0.41

0.05–2.15

1.65

0.14–19.65

  61–80

80.0

Reference

Reference

P = 0.014

P = 0.0043

 Gender

  Female

34.8

Reference

Reference

  Male

58.1

2.60

1.12–6.25

2.51

0.80–8.45

P = 0.029

P = 0.12

 Education

  Basic

19.2

0.10

0.03–0.34

0.05

0.01–0.25

  Intermediate

47.2

0.38

0.13–1.06

1.62

0.41–6.92

  Advanced

70.4

Reference

Reference

P = 0.002

P = 0.0014

Santa Cruz participants

 Age

  10–20

63.6

0.22

0.04–1.21

0.14

0.01–1.03

  21–40

45.8

0.11

0.02–0.40

0.06

0.01–0.30

  > 40^a

88.9

Reference

Reference

P = 0.0096

P = 0.009

 Gender

  Female

62.1

Reference

Reference

  Male

72.7

1.63

0.56–4.86

0.88

0.23–3.25

P = 0.372

P = 0.85

 Education

  Basic

38.5

0.17

0.03–0.75

0.09

0.01–0.63

  Intermediate

73.3

0.73

0.17–2.79

0.88

0.16–4.70

  Advanced

78.9

Reference

Reference

P = 0.05

P = 0.035