Table 2 Characteristics of the screening era (1987–1997) breast cancer patients (N=552)
From: Role of mammography screening as a predictor of survival in postmenopausal breast cancer patients
Mode of detection | ||||
|---|---|---|---|---|
Characteristic | Screening N =224 | Interval N =99 | Clinical N =229 | P -value |
Age (years) | ||||
50–59, n (%) | 166 (74) | 74 (75) | 94 (41) | <0.001 |
60–69, n (%) | 58 (26) | 25 (25) | 135 (59) | |
Stage, n (%) | <0.001 | |||
I | 111 (50) | 30 (30) | 57 (25) | |
II | 91 (40) | 59 (60) | 124 (54) | |
III | 1 (<1) | 4 (4) | 16 (7) | |
Unknown | 21 (9) | 6 (6) | 32 (14) | |
Extend of tumour (T), n (%) | <0.001 | |||
T1 | 150 (67) | 50 (51) | 99 (44) | |
T2 | 67 (30) | 42 (42) | 92 (40) | |
T3 | 2 (<1) | 3 (3) | 16 (7) | |
T4 | 0 (0) | 2 (2) | 3 (1) | |
Tx (unknown) | 5 (2) | 2 (2) | 19 (8) | |
Number of axillary metastatic lymph nodes pN 0–3 , n(%) | <0.001 | |||
pN0 (0 nodes) | 145(65) | 47(48) | 97(42) | |
pN1 (1–3 nodes) | 37(16) | 31(31) | 47(21) | |
pN2 (4–9 nodes) | 16(7) | 12(12) | 32(14) | |
pN3 (>10 nodes) | 2(1) | 3(3) | 10(4) | |
pNx (number of nodes unknown) | 24(11) | 6(6) | 43(19) | |
