Table 1 Patient demographic and clinical characteristics for younger (18–59 years) and older (60+ years) age at breast cancer diagnosis, California, 2005–2015
All | Younger (18–59) | Older (60+) | ||||
|---|---|---|---|---|---|---|
Total Number of Patients | 192,932 | 100.0 | 94,076 | 100.0 | 98,856 | 100.0 |
Age (yrs) Mean (SD) | 60.2(13.7) | 48.8(7.3) | 71.2(8.3) | |||
Age category | ||||||
18–39 | 10,785 | 5.6 | 10,785 | 11.5 | – | – |
40–49 | 35,297 | 18.3 | 35,297 | 37.5 | – | – |
50–59 | 47,994 | 24.9 | 47,994 | 51.0 | – | – |
60–69 | 49,225 | 25.5 | – | – | 49,225 | 49.8 |
70–79 | 31,540 | 16.3 | – | – | 31,540 | 31.9 |
80+ | 18,091 | 9.4 | – | – | 18,091 | 18.3 |
Race/ethnicity | ||||||
Non-Hispanic White | 116,534 | 60.4 | 49,107 | 52.2 | 67,427 | 68.2 |
Non-Hispanic Black | 12,014 | 6.2 | 6348 | 6.7 | 5666 | 5.7 |
Hispanic | 36,363 | 18.8 | 22,305 | 23.7 | 14,058 | 14.2 |
Asian/Pacific Islander | 25,871 | 13.4 | 15,242 | 16.2 | 10,629 | 10.8 |
Other/unknown | 2150 | 1.1 | 1074 | 1.1 | 1076 | 1.1 |
Marital status | ||||||
Married | 77,754 | 40.3 | 31,324 | 33.3 | 46,430 | 47.0 |
Unmarried | 107,808 | 55.9 | 59,344 | 63.1 | 48,464 | 49.0 |
Unknown | 7370 | 3.8 | 3408 | 3.6 | 3962 | 4.0 |
Neighborhood (block group) statewide SES quintile | ||||||
1st (lowest) | 23,702 | 12.3 | 12,174 | 12.9 | 11,528 | 11.7 |
2nd | 33,174 | 17.2 | 15,787 | 16.8 | 17,387 | 17.6 |
3rd | 39,136 | 20.3 | 18,584 | 19.8 | 20,552 | 20.8 |
4th | 45,882 | 23.8 | 22,231 | 23.6 | 23,651 | 23.9 |
5th (highest) | 51,038 | 26.5 | 25,300 | 26.9 | 25,738 | 26.0 |
Insurance status | ||||||
Private only | 112,154 | 58.1 | 71,611 | 76.1 | 40,543 | 41.0 |
Medicare only or Medicare+Private | 40,789 | 21.1 | -a | -a | 40,789 | 41.3 |
Any Medicaid/Military/Other public | 33,225 | 17.2 | 18,671 | 19.8 | 14,554 | 14.7 |
No insurance | 1598 | 0.8 | 1085 | 1.2 | 513 | 0.5 |
Unknown | 5166 | 2.7 | 2709 | 2.9 | 2457 | 2.5 |
National Cancer Institute-–designated cancer center | ||||||
No | 170,509 | 88.4 | 80,161 | 85.2 | 90,348 | 91.4 |
Yes | 22,423 | 11.6 | 13,915 | 14.8 | 8508 | 8.6 |
AJCC Stage | ||||||
I | 91,898 | 47.6 | 39,390 | 41.9 | 52,508 | 53.1 |
II | 68,825 | 35.7 | 36,785 | 39.1 | 32,040 | 32.4 |
III | 22,492 | 11.7 | 13,251 | 14.1 | 9241 | 9.3 |
IV | 7249 | 3.8 | 3609 | 3.8 | 3640 | 3.7 |
2468 | 1.3 | 1041 | 1.1 | 1427 | 1.4 | |
Tumor subtype | ||||||
ER+, PR+/HER2- | 125,240 | 64.9 | 56,822 | 60.4 | 68,418 | 69.2 |
ER+, PR+//HER2+ | 19,630 | 10.2 | 11,808 | 12.6 | 7822 | 7.9 |
ER-, PR−//HER2+ | 9023 | 4.7 | 5467 | 5.8 | 3556 | 3.6 |
Triple negative | 19,836 | 10.3 | 11,280 | 12.0 | 8556 | 8.7 |
Unclassified | 19,203 | 10.0 | 8699 | 9.2 | 10,504 | 10.6 |
Lymph node involvement | ||||||
Negative | 126,915 | 65.8 | 56,446 | 60.0 | 70,469 | 71.3 |
Positive | 64,045 | 33.2 | 36,933 | 39.3 | 27,112 | 27.4 |
Unknown | 1972 | 1.0 | 697 | 0.7 | 1275 | 1.3 |
Tumor size (cm) | ||||||
0.10 ≤ tumor ≤0.50 | 13,488 | 7.0 | 6275 | 6.7 | 7213 | 7.3 |
0.50 < tumor ≤1.00 | 31,342 | 16.2 | 12,706 | 13.5 | 18,636 | 18.9 |
1.00 < tumor ≤2.00 | 67,792 | 35.1 | 31,674 | 33.7 | 36,118 | 36.5 |
2.00 < tumor ≤5.00 | 64,694 | 33.5 | 34,472 | 36.6 | 30,222 | 30.6 |
> 5.00 | 15,616 | 8.1 | 8949 | 9.5 | 6667 | 6.7 |
Grade | ||||||
Grade I | 43,518 | 22.6 | 17,726 | 18.8 | 25,792 | 26.1 |
Grade II | 80,909 | 41.9 | 37,234 | 39.6 | 43,675 | 44.2 |
Grade III/IV | 61,205 | 31.7 | 35,688 | 37.9 | 25,517 | 25.8 |
Unknown | 7300 | 3.8 | 3428 | 3.6 | 3872 | 3.9 |
Histology | ||||||
Ductal | 151,631 | 78.6 | 76,477 | 81.3 | 75,154 | 76.0 |
Lobular | 31,554 | 16.4 | 13,564 | 14.4 | 17,990 | 18.2 |
Other | 9747 | 5.1 | 4035 | 4.3 | 5712 | 5.8 |