| Frequency | Percent | Valid Percent | Cumulative Percent | ||
|---|---|---|---|---|---|
| Valid | 1 No Pressure | 65 | 8.7 | 8.7 | 8.7 |
| 2 | 102 | 13.7 | 13.7 | 22.5 | |
| 3 | 159 | 21.3 | 21.4 | 43.9 | |
| 4 | 216 | 29.0 | 29.1 | 72.9 | |
| 5 Extreme Pressure | 201 | 26.9 | 27.1 | 100.0 | |
| Total | 743 | 99.6 | 100.0 | ||
| Missing | 6 | 1 | .1 | ||
| System Missing | 2 | .3 | |||
| Total | 3 | .4 | |||
| Total | 746 | 100.0 | |||