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Table 1 Beta prior probability distributions used in the Bayesian latent class analysis to estimate sensitivity and specificity of test to identify gastric ulcers in foals

From: Diagnostic accuracy of blood sucrose as a screening test for equine gastric ulcer syndrome (EGUS) in weanling foals

Population and tests Measure Prior probability distribution (β) Mean Median 90% probability interval
Pre-weaning Prevalence 2, 8 0.20 0.18 0.041, 0.388
Post-weaning Prevalence 6, 4 0.60 0.61 0.345, 0.831
Endoscopy Sensitivity 8, 2 0.80 0.82 0.571, 0.959
Specificity 99, 1 0.99 0.99 0.970, 0.999
Sucrose 45 Sensitivity 1, 1 0.50 0.50 0.025, 0.975
Specificity 1, 1 0.50 0.50 0.025, 0.975
Sucrose 90 Sensitivity 1, 1 0.50 0.50 0.025, 0.975
Specificity 1, 1 0.50 0.50 0.025, 0.975