Table 3.
Summary of the screening mammography findings (n=1215). Percentages of the follow up tests and cancer diagnoses are based on the number of subjects in each BI-RADS classification group.
| BI-RADS | n (% of total population) | F/U Imaging* | F/U Procedure* | Number of cancer cases with confirmed diagnosis | |
|---|---|---|---|---|---|
| Malignant* | Benign* | ||||
| R1 R2 | 942 (77.5) | 0 | 0 | 0 | 0 |
| R3 R0a | 229(18.9) | 60 (26.2) | 2 (0.9) | 2 (0.9) | 46 (20.1) |
| R4 R5 | 27 (2.2) | 17 (62.9) | 14 (51.9) | 14 (51.8) | 9 (33.4) |
| No mammogramb | 17 (1.4) | 1 (5.9) | 0 | 0 | 1 (5.9)F |
F/U: follow up.
*
P<.0001 using Fisher exact test
a
Some subjects with a combined BIRADS score of R3R0 have not been included in the results as at the close of the study, they had refused follow up or insufficient time had elapsed for the follow up imaging to be performed.
b
17 subjects did not have initial screening mammogram due to either young age, fear of procedure or non-availability of technician at the time of the screening visit.