Characteristics of 57,681 GHC Women Who Obtained Diagnostic and Screening Mammograms between 1996 and 2001
| Diagnostic exams (N = 13,524 exams) | Screening exams (N = 110,323 exams) | |||
|---|---|---|---|---|
| Number of women | 11,334 | 46,347 | ||
| Mean | SD | Mean | SD | |
| Age | 61.3 | 11.0 | 62.9 | 10.9 |
| BMI (kg/m2) | 27.2 | 6.3 | 27.2 | 6.4 |
| N | % | N | % | |
| Family history of breast cancer | 5,112 | 37.8 | 40,378 | 36.6 |
| Hormone therapy use | ||||
| Never | 1,300 | 21.6 | 32,906 | 32.1 |
| Former user | 2,231 | 37.1 | 19,446 | 19.0 |
| Current user | 2,479 | 41.2 | 50,209 | 49.0 |
| Unknown | 7,514 | 7,762 | ||
| Previous biopsy | 3,513 | 26.0 | 22,603 | 20.5 |
| Reported any symptom | 4,275 | 31.6 | 5,177 | 4.7 |
| Diagnosed with breast cancer* | 666 | 4.9 | 723 | 0.7 |
| Prior mammogram history† | ||||
| No mammogram within 3 years | 520 | 8.8 | 7,531 | 21.5 |
| Mammogram without symptoms | 4,645 | 78.3 | 25,792 | 73.7 |
| Mammogram with symptoms | 769 | 13.0 | 1,682 | 4.8 |
* Women were followed-up for 12 months after each exam for a breast cancer diagnosis.
† Includes only women with exams from 1999 to 2001. N = 5,934 with diagnostic exams and 35,005 with screening exams.