Table 4.

Overall pooled prevalence estimates of FBD/FBP in human stool and environmental samples, estimated from a 20 years studies on Salmonella, E. coli, Shigella and Campylobacter, in Ethiopia

Sample source	Number (K)	Prevalence (95%CI)	τ2	I2	df	Q (P value)
Human	140	6(5.00,6.93)	0.89	93%	139	1991(< 0.01)
Environment	91	11(8.84,14.1)	1.50	96.7%	90	2745(< 0.01)
Overall	231	8 (6.51;8.71)	1.31	95.7%	230	5316(< 0.01)

Q = Heterogeneity chi-square, I² = Variance in effect size attributable to heterogeneity, τ² = Estimate of between study variance, df = degree of freedom