Table 2 The χ2 Test and Multivariate Logistic Regression Results for Predicting the Malignant Likelihood of Microcalcifications Detected by MG
Variables | Cancer (n=324) | Benign (n=151) | χ2 test | Multivariate analysis | |
|---|---|---|---|---|---|
P Value | P Value | OR (95%CI) | |||
Age (y) | 0.005 | ||||
<40 | 80 (24.7) | 43 (28.5) | Reference | ||
40-55 | 189 (58.3) | 99 (65.5) | 0.026 | 2.12 (1.10,4.09) | |
>55 | 55 (17.0) | 9 (6.0) | 0.004 | 5.17 (1.71, 15.61) | |
Clinical manifestation | <0.001 | ||||
Mass/nipple discharge | 285 (88.0) | 36 (23.8) | Reference | ||
Asymptomatic | 39 (12.0) | 115 (76.2) | <0.001 | 0.11 (0.05, 0.21) | |
Breast composition | 0.237 | ||||
a + b | 19 (5.9) | 5 (3.3) | |||
c + d | 305 (94.1) | 146 (96.7) | |||
Morphology | <0.001 | ||||
Amorphous/coarse heterogeneous | 112 (34.6) | 101 (66.9) | Reference | ||
Fine pleomorphic/fine linear and fine-linearbranching | 212 (65.4) | 50 (33.1) | <0.001 | 3.67 (2.05, 6.59) | |
Distribution | <0.001 | ||||
Regional/grouped | 244 (75.3) | 138 (91.4) | Reference | ||
Segmental/linear | 80 (24.7) | 13 (8.6) | 0.002 | 4.51 (1.77, 11.50) | |
Microcalcifications on USa | <0.001 | ||||
Yes | 301 (92.9) | 85 (56.3) | Reference | ||
No | 23 (7.1) | 66 (43.7) | 0.766 | 1.15 (0.46, 2.89) | |
Lesions on US b | <0.001 | ||||
Mass | 300 (92.6) | 51 (33.8) | Reference | ||
Cyst/normal | 24 (7.4) | 100 (66.2) | <0.001 | 0.12 (0.05, 0.30) | |