From: Age at diagnosis in relation to survival following breast cancer: a cohort study
Factor | Age at diagnosis (years) | |||||
---|---|---|---|---|---|---|
<40 | 40-49 | 50-59 | 60-69 | 70-79 | ≥80 | |
(n = 164) | (n = 630) | (n = 886) | (n = 1062) | (n = 818) | (n = 559) | |
Column percenta | ||||||
Time of diagnosis | ||||||
1961-1970 | 31 | 34 | 29 | 26 | 23 | 20 |
1971-1980 | 27 | 34 | 39 | 36 | 35 | 32 |
1981-1991 | 42 | 33 | 32 | 38 | 42 | 48 |
Menopausal status | ||||||
Premenopausal | 97 | 90 | 21 | 0 | 0 | 0 |
Postmenopausal | 3 | 10 | 79 | 100 | 100 | 100 |
Body Mass Index | ||||||
<20 | 16 | 11 | 6 | 4 | 5 | 6 |
20 - <25 | 48 | 43 | 37 | 28 | 26 | 17 |
25 - <30 | 9 | 16 | 20 | 26 | 26 | 17 |
≥30 | 2 | 4 | 8 | 11 | 10 | 5 |
Missing | 25 | 26 | 29 | 31 | 33 | 55 |
Parity (number of children) | ||||||
Nullipara | 23 | 20 | 21 | 25 | 28 | 28 |
1 | 26 | 25 | 27 | 25 | 22 | 16 |
2 | 32 | 32 | 31 | 25 | 19 | 12 |
3 | 14 | 15 | 12 | 12 | 13 | 7 |
≥4 | 3 | 3 | 5 | 7 | 9 | 10 |
Unknown | 2 | 5 | 4 | 6 | 9 | 27 |
Size of primary tumor (millimeters) | ||||||
<5 | 2 | 2 | 4 | 2 | 2 | 1 |
5 - ≤10 | 9 | 12 | 16 | 15 | 10 | 7 |
10 - ≤20 | 30 | 29 | 30 | 34 | 33 | 25 |
20 - ≤50 | 31 | 25 | 23 | 26 | 31 | 33 |
>50 | 2 | 3 | 3 | 3 | 4 | 6 |
Missing | 26 | 29 | 24 | 20 | 20 | 28 |
Histological type | ||||||
Tubular | 4 | 8 | 8 | 6 | 8 | 4 |
Tubulo-ductal | 9 | 13 | 14 | 18 | 17 | 15 |
Comedo | 49 | 31 | 28 | 26 | 25 | 23 |
Lobular | 4 | 10 | 8 | 9 | 9 | 8 |
Invasive, variable, unknown | 14 | 12 | 12 | 11 | 11 | 22 |
Invasive, type not assessed | 20 | 26 | 30 | 30 | 30 | 28 |
Tumor location | ||||||
Upper inner quadrant | 19 | 15 | 18 | 18 | 18 | 16 |
Lower inner quadrant | 7 | 8 | 7 | 7 | 7 | 6 |
Upper outer quadrant | 42 | 43 | 43 | 42 | 41 | 38 |
Lower outer quadrant | 12 | 13 | 11 | 13 | 12 | 11 |
Central | 10 | 14 | 14 | 14 | 15 | 18 |
Missing | 10 | 7 | 7 | 6 | 7 | 11 |
Axillary lymph node status | ||||||
Negative | 51 | 50 | 49 | 55 | 46 | 22 |
Positive | 46 | 44 | 42 | 36 | 34 | 22 |
Unknown | 3 | 6 | 9 | 9 | 20 | 56 |
Distant metastasis at diagnosis | ||||||
No | 99 | 97 | 95 | 94 | 91 | 90 |
Yes | 1 | 3 | 5 | 6 | 9 | 10 |
Type of surgery | ||||||
Mastectomy | 85 | 87 | 84 | 81 | 84 | 64 |
Partial mastectomy/local excision | 15 | 13 | 14 | 16 | 9 | 14 |
Inoperable | 0 | 0 | 0 | 3 | 7 | 22 |
Axillary dissection | ||||||
Yes | 98 | 94 | 92 | 91 | 81 | 44 |
No | 2 | 6 | 6 | 6 | 12 | 33 |
Inoperable | 0 | 0 | 2 | 3 | 7 | 22 |