Table 3 Comparison of different categorization methods for predicting event-free survival at 2 years in patients alive and event free at 6 months (n = 76)
Follow-up time for subpopulation predicted to progress | N (above, below) threshold or (slow, fast) response | Correctly classified,% | Positive predictive value,% | Negative predictive value,% |
|---|---|---|---|---|
3Â months | Â | Â | Â | Â |
  > 10% BCR-ABL | 32, 44 | 67.1 | 81.8 | 46.9 |
  > 1% BCR-ABL | 51, 25 | 52.6 | 84.0 | 37.3 |
  > 0.1% BCR-ABL (MMR) | 63, 13 | 44.7 | 92.3 * | 34.9 |
6Â months | Â | Â | Â | Â |
  > 10% BCR-ABL | 26, 50 | 75.0 | 84.0 | 57.7 |
  > 1% BCR-ABL | 38, 38 | 64.5 | 84.2 | 44.7 |
  > 0.1% BCR-ABL (MMR) | 50, 26 | 56.6 | 88.5 | 40.0 |
 Slow (monophasic) responders | 27, 49 | 77.6 * | 86.0 | 61.5 * |