Table 4 Five- and 10-year observed and relative survival of GIST according to risk of malignant behavior classifications
Time (years) | N at risk | OS (95% confidence interval) | RS (95% confidence interval) | |
|---|---|---|---|---|
All cases (N = 132) | ||||
5 | 84 | 62.9 (55.2 to 71.7) | 69.7 (61.1 to 79.5) | |
10 | 41 | 52.8 (44.6 to 62.5) | 66.0 (55.8 to 78.0) | |
Fletcher et al. classification | ||||
LR | 5 | 34 | 82.5 (71.5 to 95.2) | 88.1 (76.4 to 101.6) |
10 | 19 | 73.6 (60.7 to 89.3) | 88.4 (72.9 to 107.2) | |
IR | 5 | 22 | 75.0 (60.6 to 92.9) | 89.1 (70.2 to 113.1) |
10 | 12 | 71.1 (56.0 to 90.2) | 81.8 (66.1 to 101.3) | |
HR | 5 | 28 | 56.2 (42.8 to 72.2) | 63.0 (49.1 to 80.9) |
10 | 11 | 39.1 (26.9 to 57.0) | 49.0 (33.6 to 71.3) | |
Met | 5 | 2 | 8.3 (1.3 to 54.4) | 9.0 (1.4 to 58.6) |
AFIP classification | ||||
LR | 5 | 46 | 83.3 (74.0 to 93.9) | 91.5 (81.2 to 103.1) |
10 | 26 | 74.4 (63.2 to 87.6) | 90.7 (77.1 to 106.8) | |
IR | 5 | 14 | 61.9 (44.3 to 86.6) | 69.2 (49.5 to 96.8) |
10 | 7 | 55.0 (36.6 to 82.7) | 70.5 (46.9 to 106.0) | |
HR | 5 | 24 | 56.1 (42.8 to 73.5) | 62.1 (47.3 to 81.4) |
10 | 9 | 38.2 (24.9 to 58.6) | 46.1 (30.1 to 70.7) | |
Met | 5 | 2 | 8.3 (1.3 to 54.4) | 9.0 (1.4 to 58.6) |