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· DOS Abstracts
Validation of fracture treatment codes from the
Danish National Patient Registry: Implications for The
Danish Fracture Database
Morten Jon Andersen, Michael Kuhlman, Michael Brix, Kirill Gromov,
Anders Troelsen
Orthopaedic Surgery, Copenhagen University Hospital Hvidovre
Background:
More than 99% of all public discharges are recorded in the Danish
National Patient Registry (NPR), however data have been proven to have a de-
gree of uncertainty. The Danish Fracture Database (DFDB) was established with
the goal of recording all fracture surgery in Denmark. With the growing amount
of data in DFDB, a viable way of verifying completeness and validity is needed.
Purpose / Aim of Study:
The aim of this study was to validate the NPR treat-
ment codes regarding fracture surgery to allow for continuous monitoring of
DFDB data.
Materials and Methods:
At our institution the diagnosis and operation codes
are reported directly from the operation-booking programme (OBP) to NPR. A
list of 500 consecutive patients operated for fractures from January to April
2012 was created from the OBP. Patient charts and x-rays where reviewed by
the authors. The treatment codes were considered correct when codes and the
x- ray assessment matched exactly. The anatomic region of the diagnosis or
operation was considered correct if the fracture or osteosynthesis was present
in the region specified by the first four letters in the code.
Findings / Results:
In 16 cases x-rays were missing, 484 cases was analysed
further. The overall validity of data was 86% (417/484). In 94% (454/484)
the NPR diagnosis code was correct and the NPR anatomic region was correct
in all but one case. In 91% (440/484) the operation code was correct and the
anatomic region for the operation was correct in all but two cases. The correct
side (left/right) was given in 99% (477/484) of cases.
Conclusions:
Diagnosis and operation codes regarding fracture surgery re-
ported to the NPR showed very high validity. If the same data validity of data
reported to NPR can be confirmed for other regions and hospitals in Denmark
NPR data can serve as a way of verifying completeness and validity in DFDB.
87.
