Table 1. HUI3 hearing attribute levels and descriptors from Feeny et al. (2002). The third column indicates binary categories of “able to hear” or “unable to hear” that we define here. The final column indicates upward transitions in adjacent levels (shaded) that could result in ≥0.1 HUI3. All upward transitions of greater than one level potentially result in ≥0.1 HUI3 gain.