Skip to main content

Advertisement

Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Table 5 Comparison of those who did and did not give sufficient information and/or permission for follow up

From: The Million Women Study: design and characteristics of the study population

  Sufficient information and/or permission for follow-up
Characteristic Yes (n = 113 104) No (n = 8025)
Average age (years) 56.1 56.2
Average age at leaving school (years) 15 15
Average height (m) 1.62 1.62
Average weight (kg) 68.5 67.5
Current smoker (%) 18 18
Drink alcohol (%) 78 72
Exercise at least once a week (%) 43 42
Parous (%) 89 84
Average number of children 2.4 2.4
Average age at first birth (years) 24.0 24.3
Previous breast cancer screen (%) 79 76
Previous diagnosis of breast cancer (%) 1.4 0.9
Mother or sister with a history of breast 9 8
cancer (%)   
Previous use of oral contraceptives (%) 54 45
Current use of HRT (%) 33 25
Past use of HRT (%) 15 14
  1. HRT, hormone replacement therapy.