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. Author manuscript; available in PMC: 2024 Jan 1.

Published in final edited form as: Breast Cancer Res Treat. 2022 Nov 5;197(1):177–187. doi: 10.1007/s10549-022-06764-4

Figure 1. — Percent of breast cancer patients (diagnosed 2010–2014) missing (A) 0 to 8+ of the 14 (SEER) or 16 (NCDB) key variables; or (B) data by variable category. Key variables included: demographic (age, race, ethnicity, insurance, education, income), tumor (grade, ER, PR, HER2, TNM stages), and treatment (surgery in both databases; chemotherapy and radiation in NCDB). NCDB: National Cancer Database. SEER: Surveillance, Epidemiology, End Results Program.

Figure 1. — Percent of breast cancer patients (diagnosed 2010–2014) missing (A) 0 to 8+ of the 14 (SEER) or 16 (NCDB) key variables; or (B) data by variable category. Key variables included: demographic (age, race, ethnicity, insurance, education, income), tumor (grade, ER, PR, HER2, TNM stages), and treatment (surgery in both databases; chemotherapy and radiation in NCDB). NCDB: National Cancer Database. SEER: Surveillance, Epidemiology, End Results Program.