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. 2018 Jul 27;12(7):e0006688. doi: 10.1371/journal.pntd.0006688

Table 1. Probability ranges and corresponding coefficients of the beta prior densities for the sensitivities and specificities of the Kato-Katz and direct smear techniques used in the Bayesian latent class analyses to adjust for misclassification of STH infection.

Clinical priors Optimistic priors Pessimistic priors
Range Beta distribution coefficients Range Beta distribution coefficients Range Beta distribution coefficients
α β α β α β
Kato-Katz Ascaris:
Sensitivity 0.55–0.75 55.86 29.63 0.70–0.80 214.34 70.81 0.50–0.60 208.45 170.38
Specificity 0.95–0.99 231.95 6.26 0.95–0.99 231.95 6.26 0.95–0.99 231.95 6.26
Trichuris:
Sensitivity 0.75–0.90 77.85 15.75 0.85–0.95 116.06 12.05 0.70–0.80 214.34 70.81
Specificity 0.95–0.99 231.95 6.26 0.95–0.99 231.95 6.26 0.95–0.99 231.95 6.26
Hookworm:
Sensitivity 0.52–0.68 85.65 56.78 0.63–0.73 226.28 105.98 0.47–0.57 198.73 183.37
Specificity 0.95–0.99 231.95 6.26 0.95–0.99 231.95 6.26 0.95–0.99 231.95 6.26
Direct smear Ascaris:
Sensitivity 0.40–0.60 47.30 47.30 0.55–0.65 220.49 146.68 0.35–0.45 146.68 220.49
Specificity 0.95–0.99 231.95 6.26 0.95–0.99 231.95 6.26 0.95–0.99 231.95 6.26
Trichuris:
Sensitivity 0.55–0.75 55.86 29.63 0.70–0.80 214.34 70.81 0.50–0.60 208.45 170.38
Specificity 0.95–0.99 231.95 6.26 0.95–0.99 231.95 6.26 0.95–0.99 231.95 6.26
Hookworm:
Sensitivity 0.35–0.55 42.02 51.57 0.50–0.60 208.45 170.38 0.30–0.40 121.41 226.29
Specificity 0.95–0.99 231.95 6.26 0.95–0.99 231.95 6.26 0.95–0.99 231.95 6.26