Summary of the sensitivity and specificity for the 1-year risk of death for a randomly selected year (2012) for the UK cystic fibrosis population

Died in 1 yearAlive at 1 year
Risk of death 20–99%73336PPV 18%
Risk of death 0–19.9%195693NPV 100%
Sensitivity 79%Specificity 95%

PPV: positive predictive value; NPV: negative predictive value.