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Table 4 Performance of US and MAM screening by age groups in the SBSP

From: Performance of breast cancer screening methods and modality among Chinese women: a report from a society-based breast screening program (SBSP) in Shanghai

Screening methods No. of tests No. of patients Sensitivity (%) PPV (%)
US
Age group
< 45 651 4 75.0 25.0
45-59 5261 25 52.0 14.0
60-69 3128 21 52.4 20.4
≥70 221 4 50.0 25.0
MAM
Age group
< 45 644 4 50.0 18.2
45-59 5255 26 65.4 13.4
60-69 3119 21 66.8 22.6
≥70 220 4 100.0 57.1
US + MAM
Age group
< 45 644 4 75.0 15.0
45-59 5245 24 70.8 8.7
60-69 3117 21 85.7 17.7
≥70 220 4 100.0 33.3
  1. Abbreviations: US ultrasonography, MAM mammography, PPV positive predictive value.