Variable Categories

Type of variables

Collection source

Sociodemographic data

Age, level of education, marital status, type of employment, age at menarche

Interview

Clinical data

Family history related to breast cancer, location of breast cancer, clinical stage, type of treatment and presence or absence of metastases

Interview and medical file

Anthropometric data

Weight, height, body mass index (BMI)

Measured by investigators using a balance and scale

Behavioural data

Alcohol consumption, tobacco consumption, fruit/vegetable consumption, physical activity, breast-feeding, use of contraceptives, physical inactivity

Interview