Characteristics of Tumors in Women With Screen-Detected and Interval Cancers (N = 559)
| Invasive Cancers | In Situ Cancers | |||||
|---|---|---|---|---|---|---|
| Tumor Characteristic* | Screen-Detected (n = 345) No. (%) | Interval (n = 100) No. (%) | PValue | Screen-Detected (n = 100) No. (%) | Interval (n = 14) No. (%) | P Value |
| Note: Tumor characteristics were not available for 65 (10%) of the women (36 screen, 29 interval). | ||||||
| NA = not applicable. | ||||||
| * Missing: 67 for stage (49 screen, 18 interval); 100 for lymph node status (76 screen, 24 interval); 88 for tumor size (66 screen, 22 interval); and 192 for tumor grade (142 screen, 50 interval). | ||||||
| Stage | ||||||
| I or II | 288 (97) | 70 (85) | <.001 | NA | NA | NA |
| III or IV | 8 (3) | 12 (15) | ||||
| Lymph node status | ||||||
| Positive | 71 (26) | 30 (40) | .03 | NA | NA | NA |
| Negative | 198 (74) | 46 (61) | ||||
| Tumor size | ||||||
| ≤10 mm | 92 (29) | 15 (18) | .02 | 40 (62) | 2 (25) | .08 |
| 11–20 mm | 144 (46) | 37 (44) | 17 (26) | 3 (38) | ||
| ≥21 mm | 78 (25) | 32 (38) | 8 (12) | 3 (38) | ||
| Tumor grade | ||||||
| 1 or 2 | 159 (65) | 31 (53) | .09 | 32 (56) | 2 (40) | .49 |
| 3 or 4 | 87 (35) | 28 (48) | 25 (44) | 3 (60) | ||