TABLE 1.

NPV per Central Review for 2-Year PFS

PET/CT result and outcomeIMRT + cisplatinIMRTTotal
PET overall interpretation
 Positive for residual tumor0 (0.0%)2 (3.4%)2 (1.7%)
 Negative for residual tumor57 (100.0%)56 (96.6%)113 (98.3%)
2-y PFS status in PET-negative
 Failure4 (7.0%)5 (8.9%)9 (8.0%)
 Nonfailure53 (93.0%)51 (91.1%)104 (92.0%)
NPV of 2-y PFS93.0%91.1%92.0%
 95% exact CI83.0%–98.1%80.4%–97.0%85.4%–96.3%
 One-sided 90% exact LCB86.5%84.1%87.7%
H0: NPV ≤ 90% vs. HA: NPV > 90%
P value (exact)0.2964