Table 1. Distribution of Select Participant Characteristics by Benign Gynecologic Surgery Status Among 52,846 Women in the US BCDDP Follow-up Study With Follow-up From 1979-1986 to 2005.
| Characteristic | Benign gynecologic surgery status, N (%)a | |||||
|---|---|---|---|---|---|---|
|
| ||||||
| None | Simple hysterectomy | Bilateral salpingo-oophorectomy | ||||
| N=28,947 | N=11,247 | N=12,652 | ||||
| Age, y | ||||||
| <50 | 9,103 | 31.4% | 3,647 | 32.4% | 3,663 | 29.0% |
| 50-54 | 6,455 | 22.3% | 2,499 | 22.2% | 2,875 | 22.7% |
| 55-59 | 5,463 | 18.9% | 2,173 | 19.3% | 2,533 | 20.0% |
| 60-64 | 3,512 | 12.1% | 1,355 | 12.0% | 1,673 | 13.2% |
| 65-69 | 2,179 | 7.5% | 854 | 7.6% | 1,052 | 8.3% |
| 70-74 | 1,496 | 5.2% | 501 | 4.5% | 605 | 4.8% |
| 75-79 | 634 | 2.2% | 194 | 1.7% | 212 | 1.7% |
| 80+ | 105 | 0.4% | 24 | 0.2% | 39 | 0.3% |
| Birth cohort | ||||||
| 1891-<1911 | 2,108 | 7.3% | 673 | 6.0% | 808 | 6.4% |
| 1911-<1931 | 17,353 | 59.9% | 6,805 | 60.5% | 8,056 | 63.7% |
| 1931+ | 9,486 | 32.8% | 3,769 | 33.5% | 3,788 | 29.9% |
| Race/ethnicity | ||||||
| Non-Hispanic white | 24,974 | 86.3% | 9,689 | 86.1% | 10,992 | 86.9% |
| Other/unknown | 3,973 | 13.7% | 1,558 | 13.9% | 1,660 | 13.1% |
| Education | ||||||
| <High school or high school graduate | 3,639 | 12.7% | 1,665 | 15.0% | 1,963 | 15.6% |
| Post-high school | 25,071 | 87.3% | 9,468 | 85.0% | 10,591 | 84.4% |
| BMI, kg/m2 | ||||||
| <25 | 18,827 | 66.8% | 6,968 | 63.1% | 7,876 | 63.8% |
| 25-<30 | 6,780 | 24.0% | 2,933 | 26.6% | 3,121 | 25.3% |
| 30+ | 2,596 | 9.2% | 1,139 | 10.3% | 1,343 | 10.9% |
| Smoking | ||||||
| Never | 13,909 | 56.4% | 5,823 | 59.6% | 6,670 | 59.8% |
| Ever | 10,772 | 43.6% | 3,951 | 40.4% | 4,491 | 40.2% |
| Alcohol | ||||||
| Never | 10,406 | 44.0% | 4,490 | 47.7% | 5,213 | 48.5% |
| Ever | 13,254 | 56.0% | 4,922 | 52.3% | 5,528 | 51.5% |
| Cardiovascular disease | ||||||
| No | 18,283 | 83.6% | 6,739 | 78.7% | 7,768 | 78.9% |
| Yes | 3,579 | 16.4% | 1,821 | 21.3% | 2,082 | 21.1% |
| Diabetes | ||||||
| No | 19,909 | 91.0% | 7,537 | 88.5% | 8,669 | 88.5% |
| Yes | 1,963 | 9.0% | 982 | 11.5% | 1,125 | 11.5% |
| Stroke | ||||||
| No | 22,303 | 96.5% | 8,630 | 94.7% | 9,853 | 95.0% |
| Yes | 820 | 3.5% | 481 | 5.3% | 522 | 5.0% |
| Osteoporosis | ||||||
| No | 16,914 | 78.9% | 6,475 | 76.9% | 7,433 | 77.4% |
| Yes | 4,532 | 21.1% | 1,947 | 23.1% | 2,174 | 22.6% |
| Parity | ||||||
| Nulliparous/missing | 4,524 | 15.6% | 1,110 | 9.9% | 1,888 | 14.9% |
| One | 3,528 | 12.2% | 1,212 | 10.8% | 1,670 | 13.2% |
| Two | 8,454 | 29.2% | 3,223 | 28.7% | 3,710 | 29.3% |
| Three or more | 12,441 | 43.0% | 5,702 | 50.7% | 5,384 | 42.6% |
| Menopausal hormone therapy | ||||||
| Never used | 13,631 | 47.1% | 2,679 | 23.8% | 1,904 | 15.0% |
| ET <10 years | 3,497 | 12.1% | 3,798 | 33.8% | 3,536 | 27.9% |
| ET 10+years | 584 | 2.0% | 2,771 | 24.6% | 4,501 | 35.6% |
| Used hormones, type other/unknown | 11,235 | 38.8% | 1,999 | 17.8% | 2,711 | 21.4% |
| Family history of ovarian | ||||||
| No | 17,881 | 94.7% | 7,179 | 94.5% | 8,012 | 92.8% |
| Yes | 1,009 | 5.3% | 419 | 5.5% | 623 | 7.2% |
BCDDP, Breast Cancer Detection and Demonstration Project; BMI, body mass index; ET, estrogen therapy
a
Benign gynecologic surgery status at end of follow-up. Missing values were excluded from column percentage calculations.