Original reference: Hujoel, P. P., L. H. Moulton, and W. J. Loesche. 1990. Estimation of sensitivity and specificity of site-specific diagnostic tests. Journal of Periodontal Research 25: 193-196. https://doi.org/10.1111/j.1600-0765.1990.tb00903.x.
EDT: enzymatic diagnostic test
Source: Ahn, C., M. Heo, and S. Zhang. 2015. Sample Size Calculations for Clustered and Longitudinal Outcomes in Clinical Research. Boca Raton, FL: CRC Press.