Factors		N	Prevalence		p. value
Factors		N	N of P + ve	%	p. value
Production system	Extensive	36	32	88.9	0.000
Production system	Semi-intensive	131	52	39.7	0.000
District	Deynile	85	59	69.4	0.000
	Kahda	70	15	21.4
	Yaqshid	12	10	83.3
Sex	Female	163	81	49.7	0.317
Sex	Male	4	3	75.0	0.317
Total		167	84	50.3