Stats Facts! Sensitivity, Specificity, PPV, & NPV


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Oleh Ryan Flaherty, DO, Samantha DeMarsh, DO, and Elizabeth Grogan, MD, Ryan Flaherty, DO, Samantha DeMarsh, Elizabeth Grogan, and MD ditemukan oleh Player FM dan komunitas kami — hak cipta dimiliki oleh penerbit, bukan Player FM, dan audio langsung didapatkan dari server mereka. Tekan tombol Berlangganan untuk mendapat setiap pembaharuan di Player FM, atau salin URL feed ke aplikasi podcast lainnya.

Today we’re reviewing high-yield Stats Facts! about Sensitivity, Specificity, PPV, & NPV based on the Bayesian Four-Square Model. Our review episodes are released the last week of every month and are not case-based, which differs from the episodes released earlier in the month.

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Important Formulas:

  • Sensitivity: True Positive / Total # of diseased patients

  • Specificity: True Negative / Total # of non-diseased patients

  • Positive Predictive Value (PPV): True Positive / Total # of positive test results

  • Negative Predictive Value (NPV): True Negative / Total # of negative test results

  • Prevalence: Total # of diseased patients / Total # of patients in the studied population

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