| Frequency | Percent | Valid Percent | Cumulative Percent | ||
|---|---|---|---|---|---|
| Valid | 1 No Pressure | 151 | 20.2 | 20.4 | 20.4 |
| 2 | 180 | 24.1 | 24.4 | 44.8 | |
| 3 | 238 | 31.9 | 32.2 | 77.0 | |
| 4 | 126 | 16.9 | 17.1 | 94.0 | |
| 5 Extreme Pressure | 44 | 5.9 | 6.0 | 100.0 | |
| Total | 739 | 99.1 | 100.0 | ||
| Missing | 9 No response | 5 | .7 | ||
| System Missing | 2 | .3 | |||
| Total | 7 | .9 | |||
| Total | 746 | 100.0 | |||