Table 2 Demographics and performance of screening and diagnostic mammogram
Screening mammogram | Diagnostic mammogram | |||||
|---|---|---|---|---|---|---|
Opportunistic screening mammogram | Targeted screening mammogram | |||||
No | % | No | % | No | % | |
Mean age (years) | 55.6 | 56.4 | 54.2 | |||
Race | ||||||
Chinese | 946 | 48.8 | 130 | 54.2 | 121 | 38.8 |
Malays | 428 | 22.1 | 63 | 26.3 | 71 | 22.8 |
Indians | 529 | 27.3 | 43 | 17.9 | 115 | 36.9 |
Others | 35 | 1.8 | 4 | 1.7 | 5 | 1.6 |
Total | 1938 | 100 | 240 | 100 | 312 | 100 |
Cancer detection rate (invasive and in-situ) | 0.52 | 1.25 | 26.0 % | |||
Invasive carcinoma | 8 | 2 | 79 | |||
DCIS | 2 (20 %) | 1 (33.3 %) | 2 (2.5 %) | |||
No of biopsies | 44 | 13 | 149 | |||
Biopsy rate | 2.3 % | 5.4 % | 47.8 % | |||
PPV for abnormal mammogram (BIRADS 3–5) | 7.5 % | 13 % | 63.4 % | |||
PPV for suspicious mammogram (BIRADS 4–5) | 25 % | 25 % | 71.7 % | |||
PPV for biopsies | 22.7 % | 23 % | 54.3 % | |||