To the Editor When discussing results of mammography screening trials, Dr Marmot1 concluded that “Meta-analysis of these trials with 13 years of follow-up estimated a 20% reduction in breast cancer mortality among women invited for screening.” This meta-analysis2 was based on 11 randomized controlled trials, most of them undertaken before the era of modern adjuvant systemic therapy for breast cancer.
Jatoi I. Breast Cancer Screening Recommendations. JAMA. 2013;310(19):2101-2102. doi:10.1001/jama.2013.278792