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Table 4 Univariate analysis of risk factors for Buruli ulcer disease in Zio and Yoto districts of Maritime Region, Togo, May 19–30, 2015

From: Risk factors for Mycobacterium ulcerans infection (Buruli Ulcer) in Togo ─ a case-control study in Zio and Yoto districts of the maritime region

Characteristics

Cases n (%)

Controls n (%)

Univariable OR (95% CI)

p*

Farming

77 (92.8)

120 (93.8)

0.86 (0.29–2.56)

0.78

Farming activities

 Plowing

79 (83.1)

117 (91.4)

0.46 (0.19–1.01)

0.07

 Sowing

73 (88.0)

123 (96.1)

0.29 (0.09–0.90)

0.03

 Harvesting

74 (89.2)

125 (97.7)

0.19 (0.05–0.75)

0.01

Exposure to water

Primary source of drinking water

 River or stream

38 (45.8)

58 (45.3)

1.02 (0.58–1.77)

0.95

 Open borehole

15 (18.1)

23 (18.0)

1.0 (0.49–2.01)

0.98

 Borehole with pump

75 (90.4)

119 (93.0)

0.71 (0.26–1.92)

0.49

Primary source of washing water

 River or stream

42 (50.6)

60 (46.9)

1.16 (0.68–2.02)

0.59

 Open borehole

21 (25.3)

28 (21.9)

1.21 (0.63–2.31)

0.56

 Borehole with pump

73 (88.0)

116 (90.6)

0.75 (0.31–1.83)

0.54

 Bathing with a water from an open borehole

9 (10.8)

3 (2.3)

5.07 (1.33–19.31)

0.01

 Standing water in house

10 (12.0)

18 (14.1)

0.86 (0.38–1.97)

0.72

 Swam, waded or bathed in a river or stream

37 (44.6)

37 (28.9)

1.98 (1.11–3.52)

0.02

 Crossed a body of water

48 (57.8)

55 (43.0)

1.93 (1.09–3.39)

0.02

 Received cuts, scratches and thorn pricks near a river

49 (62.8)

60 (47.2)

1.88 (1.06–3.36)

0.03

Exposure to insect bite

 Received insect bite near a river

50 (64.9)

59 (46.5)

2.13 (1.19–3.83)

0.01

location of insect bite on the body

 Head

48 (57.8)

56 (43.8)

1.76 (1.01–3.08)

0.05

 Forearms

50 (60.2)

57 (44.5)

1.88 (1.08–3.31)

0.03

 Arms

50 (60.2)

59 (46.1)

1.77 (1.01–3.10)

0.04

 Hands

49 (59.0)

57 (44.5)

1.79 (1.03–3.14)

0.04

 trunk

48 (57.8)

57 (44.5)

1.70 (0.98–2.98)

0.06

 thigh

48 (57.8)

56 (43.8)

1.76 (1.01–3.08)

0.05

 Legs

48 (57.8)

57 (44.5)

1.70 (0.98–2.98)

0.06

 Feet

48 (57.8)

57 (44.5)

1.70 (0.98–2.98)

0.06

 Mosquito bite in house

75 (90.4)

124 (96.9)

0.95 (0.48–1.89)

0.90

Exposure to animals

 Owned livestock or pets

60 (77.9)

100 (78.7)

0.95 (0.48–1.89)

0.89

 Handled livestock or pets

12 (15.6)

26 (20.6)

0.71 (0.33–1.50)

0.37

 Share indoor living space with livestock or pets

24 (32.4)

37 (29.4)

1.15 (0.62–2.14)

0.65

 Bitten or scratched by animals

5 (6.7)

10 (7.8)

0.84 (0.27–2.56)

0.76

Exposure to infectious agents

 BCG vaccination

41 (51.2)

64 (50.4)

1.03 (0.59–1.181)

0.90

Soap use while bathing

 Sometimes

5 (6.4)

10 (7.9)

1

 

 Always

73 (93.6)

117 (92.1)

0.80 (0.26–2.43)

0.69

Soap use while washing

 Sometimes

5 (6.0)

0 (0.0)

1

 

 Always

78 (94.0)

128 (100.0)

0.38 (0.32–0.45)

0.01

Clothing worn while farming

 Trousers

40 (48.2)

92 (71.9)

0.36 (0.20–0.65)

0.001

 Top shirt

76 (91.6)

120 (93.8)

0.72 (0.25–2.01)

0.55

 Closed shoes

9 (10.8)

26 (20.3)

0.48 (0.21–1.08)

0.07

 Dress

34 (41.0)

48 (37.5)

1.16 (0.66–2.03)

0.61

 Open shoes

73 (88.0)

110 (85.9)

1.19 (0.522–2.73)

0.67

 Hat

6 (7.2)

35 (27.3)

0.21 (0.08–0.52)

0.001

Clothing worn in non-farming activity

 Trousers

33 (39.8)

61 (47.7)

0.72 (0.41–1.27)

0.26

 Top shirt

73 (88.0)

118 (92.2)

0.62 (0.25–1.56)

0.31

 Closed shoes

4 (4.8)

5 (3.9)

1.25 (0.32–4.78)

0.74

 Dress

33 (39.8)

54 (42.2)

0.90 (0.51–1.59)

0.73

 Open shoes

72 (86.7)

114 (89.1)

0.80 (0.35–1.87)

0.61

 Hat

1 (1.2)

7 (5.5)

0.21 (0.25–1.75)

0.15

Insect protection products use

 Sometimes

74 (96.1)

118 (92.2)

1

0.27

 Always

3 (3.9)

10 (7.8)

0.59 (0.22–1.64)

 

Bednets use

 Sometimes

40 (51.3)

76 (59.4)

1

 

 Always

38 (48.7)

52 (40.6)

0.72 (0.41–1.27)

0.26

Perception and etiology of the BUD

68 (88.3)

113 (88.3)

1.00 (0.42–2.42)

0.99

Behavior and beliefs

 Poor hygiene cause Buruli ulcer

57 (81.4)

116 (91.3)

0.42 (0.17–0.99)

0.04

 Seeking treatment with plants

4 (5.3)

10 (7.9)

0.64 (0.19–2.12)

0.47

  1. *Boldface type indicates differences that were statistically significant at p < 0.05 between cases and controls