Fig. 1

Flow diagram depicting the identification of HD cases on the 31st of December, 2017, from Navarre’s Health Information Systems (2000–2017), and from the Medical Genetics Centre (1991–2017), including the validation process. MBDS Minimum Basic Data Set at hospital discharge, ECRPC Electronic Clinical Records in Primary Care, TWDR Temporary Work Disability Registry, MS Mortality Statistics, n number of cases, FP false positives, TP true positives, HD Huntington’s Disease