Table 1.
Characteristics of the women in the study with high-risk lesions, with and without follow-up surgery within 6 months of diagnosis.
| P-value (adjusted for registry) | Women without follow-up surgery*, N, (row %) | Women with follow-up Surgery*, N, (row %) | Women with high-risk lesions |
|---|---|---|---|
| N=450 (47) | N=507 (53) | Characteristic (N, column %, N=957) | |
| 0.0026† | Age at mammography, years | ||
| 120 (45) | 148 (55) | 40–49 (268, 28%) | |
| 138 (41) | 195 (59) | 50–59 (333, 35%) | |
| 104 (53) | 94 (48) | 60–69 (198, 21%) | |
| 88 (56) | 70 (44) | 70+ (158, 17%) | |
| 0.48 | Personal history of breast cancer | ||
| 427 (47) | 488 (53) | No (915, 96%) | |
| 23 (55) | 19 (45) | Yes (42,4%) | |
| 0.38 | Family history of breast cancer | ||
| 321 (48) | 351 (52) | No (672, 70%) | |
| 60 (43) | 80 (57) | Yes (140, 15%) | |
| 69 (48) | 76 (52) | Unknown (145, 15%) | |
| 0.86 | Menopausal status | ||
| 117 (46) | 140 (55) | Pre (257, 27%) | |
| 294 (49) | 305 (51) | Post (599, 63%) | |
| 39 (39) | 62 (61) | Missing (101, 11) | |
| 0.62 | Hormone therapy use | ||
| 304 (48) | 330 (52) | No (634, 66%) | |
| 87 (46) | 103 (54) | Yes (190, 20%) | |
| 59 (44) | 74 (56) | Unknown (133, 14%) | |
| 0.58 | Indication for mammogram | ||
| 401 (47) | 451 (53) | Routine screening (852, 89%) | |
| 49 (47) | 56 (53) | Short interval follow-up (105, 11%) | |
| 0.097† | Time since last mammography | ||
| 57 (50) | 58 (50) | <1 year (115, 12%) | |
| 316 (48) | 349 (53) | 12–35 months (665, 70%) | |
| 23 (36) | 41 (64) | 36–59 months (64, 7%) | |
| 44 (52) | 41 (48) | No previous mammo/5+ years ago (85,9%) | |
| 10 (36) | 18 (64) | Unknown (28, 3%) | |
| 0.63† | 15 (52) | BI-RADS breast density | |
| 14 (48) | 157 (49) | Almost entirely fat (29, 3%) | |
| 166 (51) | 234 (57) | Scattered fibroglandular tissue (323, 35%) | |
| 175 (43) | 45 (52) | Heterogeneously dense (409, 43) | |
| 42 (48) | 56 (51) | Extremely dense (87, 9%) | |
| 53 (49) | Missing (109, 11%) | ||
| 0.0061 | 73 (53) | 64 (47) | Exam year |
| 138 (52) | 130 (49) | 1994–1998 (137, 14%) | |
| 165 (42) | 231 (58) | 1999–2001 (268, 28%) | |
| 74 (47) | 82 (53) | 2002–2005 (396, 41%) | |
| 2006–2007 (156, 16%) | |||
| <0.0001 | Lesion type on needle biopsy | ||
| 265 (39) | 420 (61) | ADH (685, 72%) | |
| 105 (61) | 68 (39) | Lobular Neoplasia (173, 18%) | |
| 80 (81) | 19 (19) | Papillary (199, 10%) |
*
including excisional biopsies, lumpectomies and mastectomies
†
trend test
ADH-Atypical ductal hyperplasia