Prevalence, Intensity, and Risk Factors for Helminth Infections in Pigs in Menoua, Western Highlands of Cameroon, with Some Data on Protozoa

Table 4

Logistic regression analysis of risk factors for Strongyloides ransomi infection in pig farms in Menoua Division. Results are expressed in terms of odd ratio (OR) and 95% confidence interval (CI).

Factor				Univariate analysis		Multivariate analysis
			(%)	OR	value	OR	95% CI	value
Continuous variables
Farmer age (year)	597	206	34.5	1.00	0.26
Pig age (month)	597	206	34.5	1.01	0.36
Herd size	597	206	34.5	0.92	0.01	0.97	0.93-1.02	0.36
Categorical variables
Farmer gender
Male	488	161	33.0	0.70	0.10
Female	109	45	41.3	1.00
Farmer education level
Higher education	51	11	21.6	0.06	0.01	0.13	0.04-0.39	0.01*
Secondary school	378	100	26.5	0.09	0.01	0.19	0.09-0.43	0.01*
Primary school	158	87	55.1	0.30	0.14	—
Never schooled	10	8	80.0	1.00		1.00
Animal breed
Crossed breed	547	181	33.1	0.52	0.06
Duroc	10	8	80.0	4.23	0.09
Landrace	2	0	0.0	0.00	0.99
Large white	35	17	48.6	1.00
Pietrain	2	0	0.0
Naima	1	0	0.0
Housing
Wooden piggery	525	183	34.9	0.39	0.01	0.15	0.06-0.39	0.01*
Semipermanent structure	39	4	10.3	0.08	0.01	0.18	0.03-0.90	0.03*
Permanent structure	33	19	57.6	1.00		1.00
Floor type
Cemented	201	39	19.4	0.33	0.01	0.61	0.35-1.06	0.08
Non cemented	396	167	42.2	1.00		1.00
Contact with domestic animals
Yes	208	89	42.8	1.73	0.01	2.47	1.38-4.43	0.02*
No	389	117	30.1	1.00		1.00
Contact with wild life†
Yes	545	175	32.1	0.32	0.01
No	52	31	59.6	1.00

 = number of samples examined;  = number positive; (%) = prevalence in percentage; † variable dropped in multivariate analysis due to collinearity.  = significant value.