Table 5 Multiple logistic regression analysis of giardiasis and cryptosporidiosis with the risk factors that fulfilled the acceptance criterion in the univariate analysis

Abdominal pain

4.00

1.11–13.02

0.030

Sex^c

1.81

0.67–4.90

0.237

Age^c

0.84

0.65–1.05

0.178

W/A (Z score)^c

2.81

0.98–8.09

0.054

H/A (Z score)^c

0.30

0.15–0.64

0.002

BMI/A (Z score)^c

0.13

0.18–0.92

0.032

Cryptosporidium spp. infected^b (n = 47)

OR

(95%CI)

*p

Tap water

5.00

1.41–17.20

0.012

Sex^c

0.47

0.15–1.40

0.190

Age^c

1.56

1.11–2.18

0.010

W/A (Z score)^c

3.88

1.23–12.20

0.020

H/A (Z score)^c

0.39

0.20–0.77

0.007

BMI/A (Z score)^c

0.35

0.14–0.85

0.210