A new probability formula for surveys to substantiate freedom from disease
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2022, Preventive Veterinary MedicineCitation Excerpt :Values of Se and Sp for BVDV Ag-ELISA kits specific for p125/80 non-structural proteins were obtained from published literature (Brinkhof et al., 1996; Sandvik and Krogsrud, 1995). The probability formula for surveys substantiates freedom from disease (FreeCalc) was used to estimate HSe and HSP for every herd (Cameron and Baldock, 1998). Overall HSe and HSP value were estimated by fitting a beta distribution using “fitdistrplus” (Delignette-Muller and Dutang, 2015) for the dataset that contains HSe and HSp for all herds, after this, α and β parameters were used to obtain the mean value for the overall HSe and HSp using “epiR beta buster” R package (Stevenson et al., 2015).
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