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Table 3 Estimated pooled prevalence of oestrosis in sheep by world region

From: The global and regional prevalence of oestrosis in sheep and goats: a systematic review of articles and meta-analysis

World region No. of studies No. of sheep sampled No. of positive sheep Pooled estimate  % 95% CI Heterogeneity (χ2) I2 (%) P-value
Global estimate 58 40,870 18,194 51.15 42.80–59.51 26,703.21 99.8 < 0.0001
Africa 16 9975 2959 47.41 32.16–62.65 6591.58 99.8 < 0.0001
Asia 20 16,897 6541 48.28 33.04–63.53 12,879.06 99.8 < 0.0001
Europe 17 12,940 8345 63.69 56.08–71.30 1108.77 98.6 < 0.0001
North and South America 5 1058 349 34.45 19.90–49.01 76.80 94.8 < 0.0001
  1. Abbreviations: CI, confidence interval; χ2, Cochran’s Q Chi square; I2, inverse variance index