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Table 5 The variances and intraclass correlation coefficients (ICC) of camel seropositivity at different levels. The greater the variances between herds compared to the overall total variance, the higher the ICC

From: Risk factors of brucellosis seropositivity in Bactrian camels of Mongolia

Eastern provinces 2013 2014 Both years
Variance at herd level 2.1 2.0 1.2
Variance at district level 0.16 0.48 0.4
Variance at province level < 0.01 < 0.01 < 0.01
Calculated ICC for camel herds 0.2 0.12 0.06
Southern & Western provinces 2014 2015 Both years
Variance at herd level 5.6 2.85 2.2
Variance at district level 2.0 1.3 1.1
Variance at province level < 0.01 < 0.01 < 0.01
Calculated ICC for camel herds < 0.001 0.04 < 0.001