Forskning
Udskriv Udskriv
Switch language
Region Hovedstaden - en del af Københavns Universitetshospital
Udgivet

The positive predictive value of spontaneous subarachnoid hemorrhage diagnoses in the Danish National Patient Register

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

DOI

  1. The association between rhabdomyolysis, acute kidney injury, renal replacement therapy, and mortality

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  2. Epidemiology of Venous Thromboembolism After Second Cancer

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  1. Blood pressure and brain injury in cardiac surgery: a secondary analysis of a randomized trial

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  2. Apolipoprotein E ε4 and cognitive function after surgery in middle-aged and elderly Danish twins

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  3. Spontaneous Subarachnoid Haemorrhage as a Cause of Out-of-Hospital Death

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  4. Ketamine for rapid sequence intubation in adult trauma patients: A retrospective observational study

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Vis graf over relationer

Introduction: Spontaneous (non-traumatic) subarachnoid hemorrhage (ntSAH) is frequently suspected in the emergency department, but the incidence rate is low. Diagnosis registers can provide valuable data for research in uncommon conditions like ntSAH. Unfortunately, validity vary in the registers. We aimed to assess the validity of the ntSAH diagnosis in the Danish National Patient Register (DNPR) and secondly to describe patients misclassified as ntSAH and to calculate the incidence rate of ntSAH. Methods: From the DNPR we extracted information on patients at least 18 years of age on admission registered with a diagnosis of ntSAH and admitted to a hospital in the Capital Region of Denmark between January 1, 2008 and December 31, 2014. Two independent investigators reviewed the medical records to assess if the diagnosis could be confirmed. Those not confirmed were categorized according to a predeveloped case report form. Results: We identified 1101 patients with a diagnosis of ntSAH; medical records were accessible for 1069 (97.7%) and 842 (78.8%) met the inclusion criteria. The diagnosis was confirmed in 537 patients (63.8% (95% confidence interval: 60.5-67.0%)). Among patients where ntSAH was not confirmed, 122 (40.0%) had a traumatic subarachnoid hemorrhage (tSAH), ntSAH had been suspected in 57 (18.9%) patients but was not substantiated during admission, while parenchymal hemorrhages were identified in 45 (14.5%) patients. The incidence rate was 5.5 (95% CI: 4.9-6.1) per 100,000 persons per year. Conclusion: We found a positive predictive value (PPV) of 63.8% for the diagnosis of non-traumatic subarachnoid hemorrhage in the Danish National Patient Register. The low PPV suggests that care should be taken if unvalidated data are used for research and that results of previous studies should be interpreted with caution.

OriginalsprogEngelsk
TidsskriftClinical Epidemiology
Vol/bind11
Sider (fra-til)323-331
Antal sider9
ISSN1179-1349
DOI
StatusUdgivet - 2019

ID: 57348517