Table 2.
Image quality per projection
| Projection | p value* | ||||
|---|---|---|---|---|---|
| CC | MLO | ML | |||
| Quality | 1 | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0.29 |
| 2 | 0 (0.0) | 6 (10.3) | 9 (21.4) | 0.29 | |
| 3 | 1 (100.0) | 40 (69.0) | 27 (64.3) | 0.29 | |
| 4 | 0 (0.0) | 12 (20.7) | 6 (14.3) | 0.29 | |
| 5 | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0.29 | |
| Total | 1 | 58 | 42 | ||
The values are absolute frequencies. Numbers in parentheses are column percentages. Percentages are rounded. *The p value is based on the Fisher’s exact test under exclusion of the column “CC projection”. CC craniocaudal, MLO mediolateral-oblique, ML mediolateral