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Table 1 Potential HD cases, true positives (TP), false positives (FP), positive predictive value (PPV) and sensitivity of all sources of ascertainment

From: Validation of diagnostic codes and epidemiologic trends of Huntington disease: a population-based study in Navarre, Spain

Source of ascertainment Potential HD cases TP FP PPV (95% CI) Sensitivity (95% CI)
MBDS 40 31 9 75.5% (61.2, 88.6) 50.0% (37.2, 62.8)
ECRPC 51 41 10 80.4% (66.5, 89.7) 66.1% (52.9, 77.4)
TWDR 7 7 0 100% (56.1, 100) 11.3% (5.0, 22.5)
MS 21 20 1 95.2% (74.1, 99.8) 69.0% (49.1, 84.0)
MGC 61 61 0 100% (92.6, 100) 98.4% (90.2, 100)
  1. MBDS minimum basic data set at hospital discharge, ECRPC electronic clinical records in primary care, TWDR Temporary Work Disability Registry, MS mortality statistics, MGC Medical Genetics Centre