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Table 5 Pooled prevalences and estimated sources of heterogeneity in the prevalence of oestrosis in sheep and goats

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

Variable Population Pooled estimate prevalence (%) 95% CI Heterogeneity (χ2) I2 (%) P-value
World region
 Global estimate 59,086 48.25 41.82–54.67 33,292.86 99.7 < 0.0001
 Africa 16,154 47.85 36.04–59.66 9371.58 99.7 < 0.0001
 Asia 25,548 44.48 33.09–55.87 17,688.62 99.8 < 0.0001
 Europe 16,326 56.83 48.92–64.74 2380.45 99.1 < 0.0001
 North and South America 1058 34.46 19.90–49.01 89.80 95.5 < 0.0001
Age
 Young (≤ 1 year) 18,188 38.30 27.21–49.38 8266.67 99.8 < 0.0001
 Adult (> 1 year) 18,188 49.53 38.02–61.03 7006.91 99.7 < 0.0001
Sex
 Male 12,533 39.55 27.73–51.36 2288.98 99.6 < 0.0001
 Female 12,533 48.74 31.16–66.33 6151.18 99.8 < 0.0001
Origin of sample
 Abattoir 49,124 47.72 40.53–44.90 29,650.45 99.8 < 0.0001
 Farm 9962 50.78 36.49–65.07 2658.55 99.5 < 0.0001
Method of detection
 Necropsy 46,398 47.16 39.81–54.51 29,999.03 99.8 < 0.0001
 Serology 11,075 50.87 39.09–62.65 995.73 99.2 < 0.0001
 Other 1613 56.18 37.80–74.57 360.69 98.3 < 0.0001
Study duration (months)
 ≤ 6 12,200 49.19 37.73–60.64 3046.99 99.4 < 0.0001
 > 6 to ≤ 12 19,908 52.23 40.57–63.89 18,701.79 99.8 < 0.0001
 > 12 22,219 41.78 30.37–53.19 6898.52 99.7 < 0.0001
  1. Abbreviations: CI, confidence interval; χ2, Cochran’s Q Chi square; I2, inverse variance index