BC	Breast cancer
BMI	Body mass index
CCI	Charlson Comorbidity Index
CI	Confidence interval
COST	Comprehensive Score for Financial Toxicity
COVID-19	Coronavirus disease 2019
CSS	COVID Stress Scale
DCIS	Ductal carcinoma in situ
eBC	Early-stage breast cancer
FACT-B	Functional Assessment of Cancer Therapy-Breast
GLM	Generalized linear model
HIPAA	Health Insurance Portability and Accountability Act
HIV/AIDS	Human immunodeficiency virus/acquired immunodeficiency syndrome
HRQoL	Health-related quality of life
mBC	Metastatic breast cancer
PHQ-8	8-Item Patient Health Questionnaire
PIC	Psychological Impact of Cancer Scale
SD	Standard deviation
SE	Standard error
US	United States
vs.	Versus