scholarly journals Diagnosis of Open Tibial Fracture Showed High Positive Predictive Value in the Swedish National Patient Register

2020 ◽  
Vol Volume 12 ◽  
pp. 1113-1119
Author(s):  
Ulrika Tampe ◽  
Sonny Frank ◽  
Rüdiger J Weiss ◽  
Karl-Åke Jansson
Keyword(s):  
Positive Predictive Value ◽  
Predictive Value ◽  
Tibial Fracture ◽  
Open Tibial Fracture ◽  
National Patient Register ◽  
Patient Register ◽  
National Patient ◽  
High Positive Predictive Value

Validity of the diagnosis of appendicitis in the Danish National Patient Register

2018 ◽  
Vol 48 (1) ◽  
pp. 38-42 ◽  
Author(s):  
Jakob Kleif ◽  
Lau C. Thygesen ◽  
Ismail Gögenur
Keyword(s):  
Positive Predictive Value ◽  
Negative Predictive Value ◽  
Predictive Value ◽  
Surgical Removal ◽  
Predictive Values ◽  
National Patient Register ◽  
Patient Register ◽  
National Patient ◽  
Sensitivity Specificity ◽  
Danish National Patient Register

Aims: Appendicitis is a common disease. The nationwide Danish National Patient Register provides an important data source for epidemiological research. Data used in register-based epidemiological research needs to be validated. We aimed to validate the diagnosis of appendicitis in the Danish National Patient Register. Methods: From 1997 to 2015 nationwide data from the Danish National Patient Register, the Danish Pathology Register, and the Danish Civil Registration System were used to validate the diagnosis of appendicitis or the combination of the diagnosis for appendicitis and surgical removal of the appendix in the Danish National Patient Register. Sensitivity, specificity, and positive and negative predictive values were calculated using pathology reports as golden standard. Results: Diagnosis of appendicitis in the Danish National Patient Register had a sensitivity, specificity, positive predictive value, and negative predictive value of 0.928 (95% confidence interval (CI): 0.927; 0.930), 0.995 (95% CI: 0.995; 0.995), 0.769 (95% CI: 0.767; 0.771), and 0.999 (95% CI: 0.999; 0.999). A diagnosis of appendicitis and a procedure code for surgical removal of the appendix had a sensitivity, specificity, positive predictive value, and negative predictive value of 0.886 (95% CI: 0.885; 0.888), 0.998 (95% CI: 0.998; 0.998), 0.895 (95% CI: 0.894; 0.897), and 0.998 (95% CI: 0.998; 0.998). Conclusions: The diagnosis of appendicitis alone or in combination with the registered surgical removal of the appendix in the Danish National Patient Register showed acceptable validity. Whether to use the diagnosis for appendicitis only or in combination with procedure codes for the removal of the appendix depends on whether high sensitivity or high positive predictive values are warranted.

Predictive value of stroke discharge diagnoses in the Danish National Patient Register

2017 ◽  
Vol 45 (6) ◽  
pp. 630-636 ◽  
Author(s):  
Pernille Lühdorf ◽  
Kim Overvad ◽  
Erik B. Schmidt ◽  
Søren P. Johnsen ◽  
Flemming W. Bach
Keyword(s):  
Predictive Value ◽  
Medical Records ◽  
Outpatient Clinics ◽  
Discharge Diagnosis ◽  
Predictive Values ◽  
National Patient Register ◽  
Patient Register ◽  
Stroke Diagnosis ◽  
National Patient ◽  
Danish National Patient Register

Aims: To determine the positive predictive values for stroke discharge diagnoses, including subarachnoidal haemorrhage, intracerebral haemorrhage and cerebral infarction in the Danish National Patient Register. Methods: Participants in the Danish cohort study Diet, Cancer and Health with a stroke discharge diagnosis in the National Patient Register between 1993 and 2009 were identified and their medical records were retrieved for validation of the diagnoses. Results: A total of 3326 records of possible cases of stroke were reviewed. The overall positive predictive value for stroke was 69.3% (95% confidence interval (CI) 67.8–70.9%). The predictive values differed according to hospital characteristics, with the highest predictive value of 87.8% (95% CI 85.5–90.1%) found in departments of neurology and the lowest predictive value of 43.0% (95% CI 37.6–48.5%) found in outpatient clinics. Conclusions: The overall stroke diagnosis in the Danish National Patient Register had a limited predictive value. We therefore recommend the critical use of non-validated register data for research on stroke. The possibility of optimising the predictive values based on more advanced algorithms should be considered.

Gender differences in delays to diagnosis of acromegaly: data from the Swedish National Patient Register

2018 ◽  
Author(s):  
Daniel Granfeldt ◽  
AEse Bjorstad ◽  
Marlow Tom ◽  
Anthony Berthon ◽  
Jerome Dinet ◽  
...  
Keyword(s):  
Gender Differences ◽  
National Patient Register ◽  
Patient Register ◽  
National Patient

scholarly journals Validity and reliability of social anxiety disorder diagnoses in the Swedish National Patient Register

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Alba Vilaplana-Pérez ◽  
Josef Isung ◽  
Sonja Krig ◽  
Sarah Vigerland ◽  
Maral Jolstedt ◽  
...  
Keyword(s):  
Anxiety Disorder ◽  
Social Anxiety ◽  
Social Anxiety Disorder ◽  
Validity And Reliability ◽  
National Patient Register ◽  
Patient Register ◽  
National Patient

scholarly journals Positive predictive value of ICD-10 diagnosis codes for brain abscess in the Danish National Patient Registry

2018 ◽  
Vol Volume 10 ◽  
pp. 1503-1508 ◽  
Author(s):  
Jacob Bodilsen ◽  
Michael Dalager-Pedersen ◽  
Nicolai Kjærgaard ◽  
Diederik van de Beek ◽  
Matthijs C Brouwer ◽  
...  
Keyword(s):  
Positive Predictive Value ◽  
Brain Abscess ◽  
Predictive Value ◽  
Patient Registry ◽  
National Patient Registry ◽  
Diagnosis Codes ◽  
Danish National Patient Registry ◽  
National Patient ◽  
Icd 10

scholarly journals Validating surgical procedure codes for inflammatory bowel disease in the Swedish National Patient Register

2019 ◽  
Author(s):  
Anders Forss ◽  
Pär Myrelid ◽  
Ola Olén ◽  
Åsa H Everhov ◽  
Caroline Nordenvall ◽  
...  
Keyword(s):  
Inflammatory Bowel Disease ◽  
Sensitivity And Specificity ◽  
Bowel Disease ◽  
Surgical Procedure ◽  
High Sensitivity ◽  
National Patient Register ◽  
Patient Register ◽  
National Patient ◽  
Inflammatory Bowel ◽  
Procedure Codes

Abstract Validating surgical procedure codes for inflammatory bowel disease in the Swedish National Patient Register Background: About 50% of patients with Crohn’s disease (CD) and about 20% of those with ulcerative colitis (UC) undergo surgery at some point during the course of the disease. The diagnostic validity of the Swedish National Patient Register (NPR) has previously been shown to be high for inflammatory bowel disease (IBD), but there are little data on the validity of IBD-related surgical procedure codes. Methods: Using patient chart data as the gold standard, surgical procedure codes registered between 1966 and 2014 in the NPR were abstracted and validated in 262 patients with a medical diagnosis of IBD. Of these, 53 patients had reliable data about IBD-related surgery. The positive predictive value (PPV), sensitivity and specificity of the surgical procedure codes were calculated. Results: In total, 158 codes were registered in the NPR. 155 of these, representing 60 different surgical procedure codes, were also present in the patient charts and validated using a standardized form. Of the validated codes 153/155 were concordant against the patient charts, corresponding to a PPV of 96.8% (95%CI=93.9-99.1). Stratified in abdominal, perianal and other surgery, the corresponding PPVs were 94.1% (95%CI=88.7-98.6), 100% (95%CI=100-100) and 98.1% (95%CI=93.1-100), respectively. Of 164 surgical procedure codes in the validated patient charts, 155 were registered in the NPR, corresponding to a sensitivity of the surgical procedure codes of 94.5% (95%CI=89.6-99.3). The specificity of the NPR was 98.5% (95%CI=97.6-100). Conclusions: Data on IBD-related surgical procedure codes are reliable, with the Swedish National Patient Register showing a high sensitivity and specificity for such surgery. Keywords: Epidemiology, Inflammatory bowel disease, Validation, National Patient Register, Procedure code

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