Survival of women diagnosed with breast cancer and who have survived a previous cancer.

ABSTRACT:

Purpose

Many women diagnosed with breast cancer have survived previous cancer; yet little is known about the impact of previous cancer on overall and cancer-specific survival.

Methods

This population-based cohort study using SEER-Medicare data included women (age ≥ 66 years) diagnosed with breast cancer between 2005 and 2015. Separately by breast cancer stage, we estimated effect of previous cancer on overall survival using Cox regression and on cause-specific survival using competing risk regression; all survival analyses adjusted for covariates.

Results

Of 138,576 women diagnosed with breast cancer, 8% had a previous cancer of another organ site, most commonly colorectal or uterine cancer or melanoma. Many of these women (46.3%) were diagnosed within 5 years of brea

SUBMITTER: Pruitt SL 

PROVIDER: S-EPMC8318112 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature