Extended Data Table 1 Characteristics of the UK and US test sets

From: International evaluation of an AI system for breast cancer screening

  1. For each feature, we constructed a joint 95% confidence interval on the proportions in each category. a, The UK test set was drawn from two sites in the UK over a four-year period. For reference, we present the corresponding statistics from the broader UK NHSBSP65. For comparison with national numbers, only cancers that were detected by screening are reported here. b, The US test set was drawn from one academic medical centre over an eighteen-year period. For reference, we present the corresponding statistics from the broader US screening population, as reported by the Breast Cancer Surveillance Consortium (BCSC)2. Cancers reported here occurred within 12 months of screening.
  2. DCIS, ductal carcinoma in situ.
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