Table 2.
Clinical findings of women receiving mammography in the NBCCEDP by self-reported breast symptoms
| Reported breast symptoms | ||||
|---|---|---|---|---|
| Total (n = 2,961) N (%1) |
No (n = 2,365) N (%1) |
Yes (n = 596) N (%1) |
p-value2 | |
| Total | 311,582 (100) | 279,575 (100) | 32,007 (100) | |
| Received a CBE | <0.0001 | |||
| No | 45,622 (14.6) | 43,378 (15.5) | 224 (7.0) | |
| Yes | 265,960 (85.4) | 236,197 (84.5) | 29,736 (93.0) | |
| CBE results | <0.0001 | |||
| Normal | 242,072 (91.0) | 222,785 (94.3) | 19,287 (64.8) | |
| Abnormal | 18,453 (6.9) | 9,408 (4.0) | 9,045 (30.4) | |
| Unknown | 5,435 (2.0) | 4,004 (1.7) | 1,431 (4.8) | |
| Mammogram results | <0.0001 | |||
| Negative | 178,325 (57.2) | 160,878 (57.5) | 17,447 (54.5) | |
| Benign | 88,384 (28.4) | 80,458 (28.8) | 7,925 (24.8) | |
| Probably benign | 12,837 (4.1) | 10,652 (3.8) | 2,186 (6.8) | |
| Suspicious abnormality | 3,178 (1.0) | 2,615 (0.9) | 563 (1.8) | |
| Suggestive of malignancy | 883 (0.3) | 627 (0.2) | 256 (0.8) | |
| Assessment incomplete | 27,975 (9.0) | 24,345 (8.7) | 3,630 (11.3) | |
| Received diagnostic follow-up | <0.0001 | |||
| No | 261,116 (83.8) | 241,660 (86.4) | 19,456 (60.8) | |
| Yes | 50,466 (16.2) | 37,915 (13.6) | 12,551 (39.2) | |
| Final diagnosis | <0.0001 | |||
| No cancer | 43,866 (86.9) | 33,293 (87.8) | 10,572 (84.2) | |
| In situ | 429 (0.9) | 317 (0.8) | 112 (0.9) | |
| Invasive | 1,438 (2.9) | 903 (2.4) | 535 (4.3) | |
| Unknown | 4,733 (9.4) | 3,402 (9.0) | 1,332 (10.6) | |
1
Percentages may not add to 100% due to rounding
2
Pearson chi-square test of independence
NBCCEDP=National Breast and Cervical Cancer Early Detection Program; CBE=clinical breast exam; n = raw sample; N = weighted sample