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Table 1 Univariate analysis for the association between potential risk factors and BTV infection among cattle in East Darfur State of Sudan using Chi-square test

From: Prevalence of bluetongue virus antibodies and associated risk factors among cattle in East Darfur State, Western Sudan

Risk factors Animals tested Animals affected (%) df χ 2 p-value
Locality    4 18.77 0.01
Aldeain 60 31(51.6%)    
Abugabra 44 25(56.8%)    
Bahrelarab 94 70(74.4%)    
Asalaya 10 10(100.0%)    
Fardous 16 14(87.5%)    
Age    1 18.69 0.01
Small 72 34 (47.2%)    
Old 152 116(76.3%)    
Sex    1 9.25 0.02
Female 170 123(72.3%)    
Male 54 27(50%)    
Breed    1 9.07 0.03
Endogenous 207 133(64.2%)    
Cross 17 17(100.0%)    
Body condition    1 0.30 0.58
Thin 206 139(67.5%)    
Fat 18 11(61.1%)    
Animal source    2 17.17 0.01
Raised on farm 166 110(66.3%)    
Purchased from other farms 36 32(88.9%)    
Purchased from local market 22 8(36.4%)    
Grazing system    1 1.29 0.25
Stationary 94 59(62.7%)    
Nomadic 130 91(70%)    
Herd size    2 5.14 0.08
Small 40 26(65%)    
Medium 83 63(75.9%)    
Large 101 61(60.4%)    
Insect presence    1 7.48 0.01
No 48 17(35.4%)    
Yes 176 133(75.5%)