National Bowel Cancer Audit: Short Report – Cancer registry data

Reports | Published: 11 Jun 2020

Initial linkage between cancer registration data provided by the National Cancer Registration and Analysis Service (NCRAS) and the National Bowel Cancer Audit (NBOCA) data for patients in England published in the 2019 Annual Report indicated there was a difference in the number and type of patients captured by the data sources. This report aims to understand the reasons for the differences in cases captured in the two datasets and to determine whether NCRAS data can be routinely linked to audit data to improve case ascertainment in audit reporting.

The objectives of the report are to:

(i) investigate how much allowing linkage to patients with a broader range of diagnosis dates improves the linkage rate

(ii) assess the quality of the linkage of the two datasets by carrying out clerical linkage of the unlinked cases, and quantifying the extent of national data opt-out

(iii) identify which patient groups are under-captured in NBOCA

(iv) assess the data completeness of key data items in NCRAS records not linked to NBOCA

(v) assess the distribution of missing patients across hospital trusts.

The entire short report can be viewed by clicking on the link below.

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National Bowel Cancer Audit: Short Report – Cancer registry data