Characteristics of study participants at their baseline screening mammogram at ages 35 to 39, overall and by whether they returned to a BCSC facility for future mammography between ages 40 and 45a
Overall | Had future mammography at ages 40–45 as captured in the BCSC | Did not have future mammography at ages 40–45 as captured in the BCSC | ||||
---|---|---|---|---|---|---|
n | %b | n | % | n | % | |
Total | 29,390 | 20,192 | 9,198 | |||
Age at baseline mammogram | ||||||
35 | 3,294 | 11.2 | 2,095 | 10.4 | 1,199 | 13.0 |
36 | 4,291 | 14.6 | 2,701 | 13.4 | 1,590 | 17.3 |
37 | 5,712 | 19.4 | 3,835 | 19.0 | 1,877 | 20.4 |
38 | 6,737 | 22.9 | 4,751 | 23.5 | 1,986 | 21.6 |
39 | 9,356 | 31.8 | 6,810 | 33.7 | 2,546 | 27.7 |
Race/ethnicity | ||||||
White | 22,888 | 77.9 | 15,794 | 78.2 | 7,094 | 77.1 |
AA | 2,609 | 8.9 | 1,585 | 7.8 | 1,024 | 11.1 |
Asian | 2,002 | 6.8 | 1,581 | 7.8 | 421 | 4.6 |
Hispanic | 1,891 | 6.4 | 1,232 | 6.1 | 659 | 7.2 |
Education level | ||||||
Less than high school graduate | 1,057 | 4.5 | 681 | 4.1 | 376 | 5.7 |
High school graduate/GED | 5,307 | 22.8 | 3,759 | 22.5 | 1,548 | 23.5 |
Some college/technical school | 6,526 | 28.0 | 4,559 | 27.3 | 1,967 | 29.9 |
College graduate | 10,388 | 44.6 | 7,700 | 46.1 | 2,688 | 40.9 |
Unknown | 6,112 | 3,493 | 2,619 | |||
Rural/urban status | ||||||
Urban focused | 20,461 | 70.1 | 13,296 | 66.3 | 7,165 | 78.7 |
Large rural | 4,178 | 14.3 | 3,232 | 16.1 | 946 | 10.4 |
Small/isolated rural | 4,536 | 15.6 | 3,538 | 17.7 | 998 | 11.0 |
Unknown | 215 | 126 | 89 | |||
First-degree family history of breast cancer | ||||||
No | 18,294 | 90.1 | 13,200 | 90.2 | 5,094 | 89.8 |
Yes | 2,009 | 9.9 | 1,430 | 9.8 | 579 | 10.2 |
Unknown | 9,087 | 5,562 | 3,525 | |||
Baseline mammography outcome | ||||||
False positive | 3,357 | 11.4 | 2,445 | 12.1 | 912 | 9.9 |
True negative | 26,033 | 88.6 | 17,747 | 87.9 | 8,286 | 90.1 |
Additional screening before age 40 | ||||||
No | 25,678 | 87.4 | 17,062 | 84.5 | 8,616 | 93.7 |
Yes | 3,712 | 12.6 | 3,130 | 15.5 | 582 | 6.3 |
Number of mammograms (any type) before age 40 | ||||||
Baseline mammogram only | 23,146 | 78.8 | 15,124 | 74.9 | 8,022 | 87.2 |
2 | 4,411 | 15.0 | 3,522 | 17.4 | 889 | 9.7 |
3+ | 1,833 | 6.2 | 1,546 | 7.7 | 287 | 3.1 |