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Data from enzymatic diagnostic tests to detect two organisms Treponema denticola and Bacteroides gingivalis.
data(periodontal)
A data frame with 50 rows and 3 variables:
Total numbers of sites tested for each individual
Number of positive tests for each individual
Status of the individual (1=infected, 0=non-infected)
Hujoel PP, Moulton LH, Loesche WJ. Estimation of sensitivity and specificity of site-specific diagnostic tests. J Periodontal Res. 1990 Jul;25(4):193-6. doi: 10.1111/j.1600-0765.1990.tb00903.x. Erratum in: J Periodontal Res 1990 Nov;25(6):377. PMID: 2197400. Moore et al. (2013) Genetics 195:1077-1086 (PubMed)
data(periodontal) hat_prevalence <- mean(periodontal$si/periodontal$ni) hat_prevalence # should be compared to: mean(periodontal$ti)
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