Risk factors among consecutive breast cancer patients

The collection took place between 1980 and 2013, and the cohort consists of 1800 individuals. The study population is based on women with consecutive breast cancer, who all visited the same doctor at the oncology department at Skåne University Hospital in Lund. All patients were interviewed by the doctor and the questions covered areas such as occupation, smoking, previous diseases, previous breast cancer screening, previous pregnancies, breast feeding, age at first menstrual period and menopause and the use of contraceptives. Information about the tumor and date of diagnosis were collected from pathology reports and patient records. For about 30 to 40% of the individuals tumor samples are collected. As controls, various control populations have been used, eg healthy controls from Dalby primary care (an urban area of the municipality of Lund), women at Scania University Hospital with benign breast disease and controls from the MISS cohort (SND study No. EXT 0102). Purpose: To study the risk factors for women with consecutive breast cancer.