Cancer Registry Data linkage of electronic health record data from ASCO's CancerLinQ: evaluation of advantages, limitations, and lessons learned

ME Charlton, AR Kahl, BD McDowell… - JCO clinical cancer …, 2022 - ascopubs.org
ME Charlton, AR Kahl, BD McDowell, RS Miller, G Komatsoulis, JE Koskimaki, DR Rivera…
JCO clinical cancer informatics, 2022ascopubs.org
PURPOSE To evaluate the completeness of information for research and quality
assessment through a linkage between cancer registry data and electronic health record
(EHR) data refined by ASCO's health technology platform CancerLinQ. METHODS A
probabilistic data linkage between Iowa Cancer Registry (ICR) and an Iowa oncology clinic
through CancerLinQ data was conducted for cases diagnosed between 2009 and 2018.
Demographic, cancer, and treatment variables were compared between data sources for the …
PURPOSE
To evaluate the completeness of information for research and quality assessment through a linkage between cancer registry data and electronic health record (EHR) data refined by ASCO's health technology platform CancerLinQ.
METHODS
A probabilistic data linkage between Iowa Cancer Registry (ICR) and an Iowa oncology clinic through CancerLinQ data was conducted for cases diagnosed between 2009 and 2018. Demographic, cancer, and treatment variables were compared between data sources for the same patients, all of whom were diagnosed with one primary cancer. Treatment data and compliance with quality measures were compared among those with breast or prostate cancer; SEER-Medicare data served as a comparison. Variables captured only in CancerLinQ data (smoking, pain, and height/weight) were evaluated for completeness.
RESULTS
There were 6,175 patients whose data were linked between ICR and CancerLinQ data sets. Of those, 4,291 (70%) were diagnosed with one primary cancer and were included in analyses. Demographic variables were comparable between data sets. Proportions of people receiving hormone therapy (30% v 26%, P < .0001) or immunotherapy (22% v 12%, P < .0001) were significantly higher in CancerLinQ data compared with ICR data. ICR data contained more complete TNM stage, human epidermal growth factor receptor 2 testing, and Gleason score information. Compliance with quality measures was generally highest in SEER-Medicare data followed by the combined ICR-CancerLinQ data. CancerLinQ data contained smoking, pain, and height/weight information within one month of diagnosis for 88%, 52%, and 76% of patients, respectively.
CONCLUSION
Linking CancerLinQ EHR data with cancer registry data led to more complete data for each source respectively, as registry data provides definitive diagnosis and more complete stage information and laboratory results, whereas EHR data provide more detailed treatment data and additional variables not captured by registries.
ASCO Publications
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