cfDNA PPV Calculator

发行商 David Deschamps AppTrack Ninja。

This Cell Free Fetal DNA PPV Calculator estimates positive predictive value (PPV) and negative predictive value (NPV) for prenatal cell-free DNA (cfDNA) screening using Bayesian probability. Conditions supported: • Trisomy 21 • Trisomy 18 • Trisomy 13 • Monosomy X (45,X) • 47,XXY • 47,XYY • 47,XXX For autosomal trisomies, pretest probability may be derived from maternal-age population risk tables (midtrimester risk by age at term). For sex chromosome aneuploidies, pretest probability can be entered as population prevalence (1 in N). Sensitivity and specificity are user-editable to reflect lab…

分类: Medical

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