Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Evaluation of tinnitus handicap inventory (THI)[38]
| Grade 1 | 0–16 | Weak | Only heard in quiet environments |
| Grade 2 | 18–36 | Moderate | Can easily be masked by ambient noise and for gettable with activity |
| Grade 3 | 38–56 | Middle | Although noticed in background noise, does not interfere with daily activities |
| Grade 4 | 58–76 | Severe | Almost always heard, can interfere with sleep and daily activities |
| Grade 5 | 78–100 | Disaster | Always heard, interferes with sleep and daily activities |
