Corrections
===========


A recent article from the Canadian Task Force on Preventive Health Care contained 2 errors.1 In Table 2, the number of women in the control group of the NBSS-1 trial was 25 216, not 24 216. In Table 3, the compliance with the first exam in the NBSS-1 trial was 99% (86–90% was the compliance with the second round of screening).

## Reference

1.  1. Ringash J, with the Canadian Task Force on Preventive Health Care. Preventive health care, 2001 update: screening mammography among women aged 40–49 years at average risk of breast cancer. CMAJ 2001;164 (4):469-76.
    
    [Abstract/FREE Full Text](http://www.cmaj.ca/lookup/ijlink/YTozOntzOjQ6InBhdGgiO3M6MTQ6Ii9sb29rdXAvaWpsaW5rIjtzOjU6InF1ZXJ5IjthOjQ6e3M6ODoibGlua1R5cGUiO3M6NDoiQUJTVCI7czoxMToiam91cm5hbENvZGUiO3M6NDoiY21haiI7czo1OiJyZXNpZCI7czo5OiIxNjQvNC80NjkiO3M6NDoiYXRvbSI7czoyMjoiL2NtYWovMTY0LzYvNzUzLjQuYXRvbSI7fXM6ODoiZnJhZ21lbnQiO3M6MDoiIjt9)