Table 4 Results of the univariate and multivariate analyses for risk factors associated with Ascaris lumbricoides and Trichuris trichiura infections of the study population

Variables/ states

No. of participants

No. of infections (Rate in %)

cOR (95 % CI)

aOR (95 % CI)

No. of infections (Rate in %)

cOR (95 % CI)

aOR (95 % CI)

Age (years)

6–10

54

7 (13.0)

1.04 (0.38, 2.83)

22 (40.7)

1.95 (0.96, 3.97)*

1.69 (0.73, 3.93)

11–20

48

7 (14.6)

1.20 (0.44, 3.26)

21 (43.8)

2.21 (1.06, 4.58)*

3.72 (1.59, 8.67)**

21–30

66

7 (10.6)

0.83 (0.31, 2.34)

17 (25.8)

0.99 (0.48, 2.02)

1.24 (0.54, 2.82)

31–40

86

13 (15.1)

1.25 (0.54, 2.90)

28 (32.6)

1.37 (0.72, 2.60)

1.61 (0.77, 3.36)

41–50

88

13 (14.8)

1.21 (0.52, 2.82)

21 (23.9)

0.89 (0.46, 1.74)

1.01 (0.47, 2.18)

>50

96

12 (12.5)

1.00

25 (26.0)

1.00

1.00

Gender

Male

172

23 (13.4)

0.99 (0.56, 1.73)

55 (32.0)

1.13 (0.74, 1.68)

Female

266

36 (13.5)

1.00

79 (29.7)

1.00

Wash hands before meals

Always

5

0 (0)

0.00

1 (20.0)

0.60 (0.06, 5.05)

Occasionally or never

427

59 (13.8)

1.00

132 (30.9)

1.00

Source of drinking water

Spring

415

57 (13.7)

1.21 (0.35, 4.15)

131 (31.6)

1.50 (0.59, 3.83)

Other

23

2 (8.7)

1.00

3 (13.0)

1.00

Work on farm

Yes

305

40 (13.1)

0.91 (0.50, 1.63)

90 (29.5)

0.85 (0.50, 1.31)

No

133

19 (14.3)

1.00

44 (33.1)

1.00

Clean food when eaten raw

Always

39

8 (20.5)

2.10 (0.81, 5.46)

16 (41.0)

1.53 (0.73, 3.21)

Occasionally

244

33 (13.5)

1.27 (0.60, 2.48)

72 (29.5)

0.92 (0.58, 1.46)

Never

128

14 (10.9)

1.00

40 (31.3)

1.00

Fertilization pattern

Directly

20

5 (25.0)

1.00

6 (30.0)

1.00

After disposal

374

49 (13.1)

0.45 (0.16, 1.30)

112 (30.0)

1.00 (0.37, 2.66)

Animal raise

Yes

338

48 (14.2)

1.34 (0.67, 2.69)

106 (31.4)

1.18 (0.72, 1.92)

No

100

11 (11.0)

1.00

28 (28.0)

1.00

Toilets

None

188

35 (18.6)

1.00

1.00

69 (36.7)

1.00

1.00

Yes

250

24 (9.6)

0.46 (0.27, 0.81)*

0.51 (0.27, 0.98)**

65 (26.0)

0.61 (0.40, 0.91)*

0.48 (0.28, 0.80)**

Village No.

1

114

25 (21.9)

3.12 (1.42, 6.83)*

3.14 (1.35, 7.27)**

29 (25.4)

1.63 (0.86, 3.06)

1.34 (0.64, 2.79)

2

115

19 (16.3)

2.20 (0.97, 4.95)*

1.61 (0.67, 3.89)

48 (41.7)

3.41 (1.87, 6.21)*

3.73 (1.92, 7.26)**

3

88

5 (5.7)

0.67 (0.22, 2.03)

0.71 (0.21,2.36)

36 (40.9)

3.30 (1.75, 6.22)*

4.53 (2.12, 9.68)**

4

121

10 (8.3)

1.00

1.00

21 (17.4)

1.00

1.00

HBV

Negative

398

49 (12.3)

1.00

1.00

122 (30.7)

1.00

Positive

40

10 (25.0)

2.37 (1.89, 5.16)*

2.55 (1.07, 6.06)**

12 (30.0)

0.97 (0.48, 1.97)

A. lumbricoides

Negative

379

103 (27.2)

1.00

1.00

Positive

59

31 (52.5)

2.97 (1.70, 5.19)*

3.09 (1.62, 5.92)**

T. trichiura

Negative

304

28 (9.2)

1.00

1.00

Positive

134

31 (23.1)

2.97 (1.70, 5.19)*

3.11 (1.63, 5.93)**