| Value | Category | Cases | |
|---|---|---|---|
| 0 | Absent | 16 |
27.6%
|
| 1 | Slight and infrequently present | 6 |
10.3%
|
| 2 | Mild in amplitude and persistent; or moderate in amplitude, but only intermittently present | 15 |
25.9%
|
| 3 | Moderate in amplitude and present most of the time | 13 |
22.4%
|
| 4 | Marked in amplitude and present most of the time | 5 |
8.6%
|
| 8 | Untestable | 3 |
5.2%
|