Table 1. Data collected for the retrospective analysis of chemotherapy costs.

Time period	Information collected
Baseline information of patient characteristics and pre-chemotherapy procedures	Patient characteristics
	Age
	Socio-professional group
	Body weight
	Height
	Body surface area
	TNM (tumor, node, metastasis) classification
	Ki-67 status
	HER2 status
	ER and PR status
	Pre-chemotherapy tests and procedures
	Central venous access implantation
	Electrocardiogram
	Laboratory tests
	Functional heart tests
	Oncologist consultations
Information collected for each chemotherapy cycle	Chemotherapy regimen (chemotherapy agents, cumulative dose, start date, and end date)
	Prophylactic agents (prophylactic treatment and cumulative dose)
	Side effects (medications taken including hospitalizations and consultations)
	Visits (number of general practitioner and specialist visits)
	Hospitalizations (start date, end date, admission service, reason of admission, type of admission (day care or complete hospitalization) link to adverse events
	Laboratory tests (hospital, home or laboratory, list of items tested)
	Home care (date and reason)
	Transport (ambulance, taxi, personal car, patient transport service ambulance, public transport, voucher from social insurance, number of kilometers between home and hospital)
	Sick leave (start date and end date)