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. 2018 Jun 8;65(6):1627–1640. doi: 10.1111/tbed.12915

Table 3.

Univariable meta‐regression

Predictors Proportion (R 2) (%) p value (RE)
Study period 7.0 0.04
Study location 16.5 0.01
Diagnostic technique 0.0 0.70
Species 0.7 0.22
Breed 0.7 0.40
Production system 2.5 0.16
Sample Size 0.0 0.95

Proportion of effect of predictors on heterogeneity. All variables had a p < 0.01 in the FE model.