ArticleClinical epidemiology2024
Validation of Obstetric Diagnosis and Procedure Codes in the Danish National Patient Registry in 2017.
Article in Clinical epidemiology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Prenatal exposure to parental smoking and infertility in sons and daughters: a cohort study.Human reproduction (Oxford, England) · 2026Article
- The Nationwide Impact of Guidelines for Prophylactic Aspirin Treatment for Preeclampsia.Paediatric and perinatal epidemiology · 2026Article
- Postpartum hemorrhage after SARS-CoV-2 infection in pregnancy: A Scandinavian register-based cohort study.Acta obstetricia et gynecologica Scandinavica · 2025Article
- Risk of Spontaneous Preterm Birth in a Subsequent Pregnancy After Full Dilatation Caesarean Birth: A Nationwide Cohort Study.BJOG : an international journal of obstetrics and gynaecology · 2025Article
- Associations between multiple perinatal exposures and risk of childhood hospitalisation with infection: a registry-based study in two countries.European journal of epidemiology · 2025Article
- Psychotropic Medication Exposure via Breast Milk: A Population-Based Descriptive Study in Denmark.Paediatric and perinatal epidemiology · 2025Article
- Breast cancer in women with previous gestational diabetes: a nationwide register-based cohort study.Breast cancer research : BCR · 2024Article
- Umbilical Cord pH Levels and Neonatal Morbidity and Mortality.JAMA network open · 2024Article
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Purpose: This study aimed to systematically evaluate the validity of variables related to pregnancy, delivery, and key characteristics of the infant in the Danish National Patient Register using maternal medical records as the reference standard. Patients and Methods: We reviewed medical records of 1264 women giving birth in the Region of Southern Denmark during 2017. We calculated positive (PPV) and negative (NPV) predictive values, sensitivity, and specificity to estimate the validity of 49 selected variables. Results: The PPV was ≥0.90 on most pregnancy-related variables including parity, pre-gestational BMI, diabetes disorders, and previous cesarean section, while it was lower for hypertensive disorders, especially mild to moderate preeclampsia (0.49, 95% CI 0.32-0.66). Sensitivity ranged from 0.80 to 1.00 on all pregnancy-related variables, except hypertensive disorders (sensitivity 0.38-0.71, lowest for severe preeclampsia). On most delivery-related variables including obstetric surgical procedures (eg cesarean section and induction of labor), pharmacological pain-relief, and gestational age at delivery, PPV's ranged from 0.98 to 1.00 and the corresponding sensitivities from 0.87 to 1.00. Regarding infant-related variables, both the APGAR score registered five minutes after delivery and birthweight yielded a PPV of 1.00. Conclusion: Obstetric coding in the Danish National Patient Register shows very high validity and completeness making it a valuable source for epidemiologic research.
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