| Frequency | Percent | Valid Percent | Cumulative Percent | ||
|---|---|---|---|---|---|
| Valid | 1 No Pressure | 147 | 19.7 | 20.1 | 20.1 |
| 2 | 134 | 18.0 | 18.3 | 38.3 | |
| 3 | 232 | 31.1 | 31.7 | 70.0 | |
| 4 | 145 | 19.4 | 19.8 | 89.8 | |
| 5 Extreme Pressure | 75 | 10.1 | 10.2 | 100.0 | |
| Total | 733 | 98.3 | 100.0 | ||
| Missing | 9 No response | 11 | 1.5 | ||
| System Missing | 2 | .3 | |||
| Total | 13 | 1.7 | |||
| Total | 746 | 100.0 | |||