Breast cancer data collection for surgical audit

Area of Science:

• Oncology
• Public Health
• Health Informatics

Background:

• Extensive data exists on breast cancer mortality, incidence, stage, survival, and treatment.
• Current data sources, including OPCS and HIPE, have considerable shortfalls and inconsistencies.
• Regional variations in data completeness and international comparisons highlight areas for improvement.

Purpose of the Study:

• To evaluate the quality and completeness of breast cancer data in the country.
• To identify limitations in data collection for mortality, incidence, staging, survival, and treatment.
• To underscore the need for improved data standardization and doctor involvement in data collection.

Main Methods:

• Analysis of existing mortality data from OPCS and HIPE.
• Review of incidence data from Regional Cancer Registries and OPCS.
• Assessment of data quality for staging, survival, and treatment, including radiotherapy, chemotherapy, and tamoxifen use.
• Comparison with international data, particularly from Scandinavia.

Main Results:

• Significant shortfalls exist in mortality data sources.
• Incidence data lacks crucial staging information and shows regional registration variations.
• Treatment data is fragmented, making it difficult to link diagnosis to operations or assess specific therapies like radiotherapy and chemotherapy.
• Tamoxifen usage data is of high quality, contrasting with other treatment data.

Conclusions:

• The poor quality of breast cancer data significantly reduces its usefulness for understanding survival trends and treatment effectiveness.
• Variations in survival figures are likely due to staging conventions rather than treatment differences.
• Doctors must agree on and ensure the collection of a standardized data set for breast cancer, as demonstrated by Scandinavian countries.