Table 3.
Sensitivity of mammograms in detecting MCs in comparison to MCs identified in biopsy specimens
| Categorical variables | Microcalcifications (Pathology) | Test statistic | ||||
|---|---|---|---|---|---|---|
| No | Yes | |||||
| n | (%) | n | (%) | χ2 | p-value | |
| Microcalcifications (Mammography) | 32.4 | <0.001 | ||||
| No | 134 | (47.8) | 147 | (52.2) | ||
| Yes | 41 | (21.4) | 150 | (78.5) | ||
Bolded numbers indicate statistical significance. Of the 472 patients who had pathology samples available, 147 (31%) had a false negative result, where MCs were detected in pathology samples but not in mammography.