Table 3. Association of age, sex, body condition score and underlying risk factors with F. hepatica infection predicted by multiple logistic regression for the study buffalo population in three governorates in the Nile Delta of Egypt.

Variable		Coefficient	Odds ratio	95% CI	P-value
Constant		−2.84	-		<0.0001
Age (years)		−0.32	0.73	0.65–0.82	<0.0001
Sex
	Male (reference)	0.00	1.00
	Female	0.102	1.11	0.79–1.55	0.55
Governorate
	Alexandria (reference)	0.00	1.00
	Beheira	−1.03	0.36	0.24–0.54	<0.0001
	Kafr el-Sheikh	−0.99	0.37	0.26–0.54	<0.0001
Body condition score
	Good (reference)	0.00	1.00
	Medium	1.60	4.95	3.30–7.43	<0.0001
	Poor	1.31	3.71	2.59–5.33	<0.0001
Prophylactic treatment
	Not applied (reference)	0.00	1.00
	Applied	−0.89	0.41	0.28–0.59	<0.0001
Type of farm
	Conventional (reference)	0.00	1.00
	Organic	−0.89	0.41	0.28–0.59	<0.0001
Education of farmer
	Basic (reference)	0.00	1.00
	Higher	−0.42	0.66	0.37–1.77	0.15
Temperature
	>30°C (reference)	0.00	1.00
	26–30°C	1.87	6.49	4.23–9.97	<0.0001
	<26°C	3.04	20.96	13.42–32.74	<0.0001
Relative humidity
	>59% (reference)	0.00	1.00
	50–59%	1.17	3.21	2.26–4.54	<0.0001
	<50%	1.53	4.63	3.12–6.85	<0.0001

Model statistics: χ² (13)=1,290.016, P≤0.0001; Nagelkerke R²=0.595; Hosmer-Lemeshow test: P=0.709.