Back to Search
Start Over
Placenta, cord and membranes: a dual center validation study of midwives' classifications and notifications to the Medical Birth Registry of Norway
- Source :
- Acta obstetricia et gynecologica Scandinavica. 96(9)
- Publication Year :
- 2016
-
Abstract
- Introduction A validation of data regarding the placenta, cord and membranes in Medical Birth Registry of Norway (MBRN) is lacking. Here we investigate the inter- and intra-observer agreement of observations regarding the placenta, cord and membranes to the MBRN in two institutions. Material and methods We conducted a dual center validation study of data regarding placenta, cord and membranes. In the inter-observer study, 196 placentas in two institutions were examined by the attending midwife and a blinded colleague, whereas in the intra-observer study registrations by the attending midwife on 195 placentas were compared with her own registrations to the MBRN. In a separate sample consisting of 51 placental pathology reports, midwives’ registrations to the MBRN were compared with the pathology report. For categorical and continuous variables, agreement was assessed by kappa value and paired sample t-test, respectively. Results Inter-observer agreement between two midwives for cord insertion site and bi-placenta, cord knots and vessel anomalies were good (kappa values >0.79 and >0.96, respectively). The inter- and intra-observer study showed no significant differences regarding placental weight and cord length (p = 0.31 and 0.28, p = 0.71 and 0.39, respectively). The inter-observer agreement between the pathology reports and midwives’ registrations was good for gross placental and cord variants (kappa 0.73–1.0), but there were significant differences in placental weight and cord length (p < 0.0001). Conclusions The results suggest that the validity of data regarding placenta and cord in the MBRN is sufficiently high to justify future large-scale epidemiologic research based on this database.
- Subjects :
- medicine.medical_specialty
Validation study
Cord knots
Cord
Placenta
Midwifery
Umbilical cord
Management Information Systems
Umbilical Cord
03 medical and health sciences
0302 clinical medicine
Paired samples
Pregnancy
medicine
Humans
Registries
Gynecology
030219 obstetrics & reproductive medicine
Obstetrics
business.industry
Norway
Obstetrics and Gynecology
Reproducibility of Results
General Medicine
medicine.disease
Delivery, Obstetric
medicine.anatomical_structure
030220 oncology & carcinogenesis
Female
business
Kappa
Subjects
Details
- ISSN :
- 16000412
- Volume :
- 96
- Issue :
- 9
- Database :
- OpenAIRE
- Journal :
- Acta obstetricia et gynecologica Scandinavica
- Accession number :
- edsair.doi.dedup.....7c8ba5d5ddaa26214467f9c495d68582