Table 3.
Pre, Post, and Percent Change Descriptive Statistics for Work Retention (WR) and No Work Retention (NWR) Groups.
| Work Retention | |||
|---|---|---|---|
| Mean, SD | WR (n=520) |
NWR (n=181) |
P Value |
| ODI | |||
| Pre | 39.60±15.17 | 44.71±15.16 | <.001 |
| Post | 25.19±13.58 | 31.23±14.89 | <.001 |
| Percent Change | 35.26±30.20 | 31.07±27.26 | .10 |
| Effect Size | .95 | .89 | |
| SF-36 MCS | |||
| Pre | 40.43±9.33 | 39.53±9.84 | .27 |
| Post | 48.47±9.39 | 45.73±10.42 | .001 |
| Percent Change | 11.61±18.95 | 7.77±21.0 | .02 |
| Effect Size | .86 | .63 | |
| SF-36 PCS | |||
| Pre | 31.40±5.69 | 30.46±6.38 | .06 |
| Post | 37.53±7.72 | 35.35±7.53 | .001 |
| Percent Change | 7.23±14.30 | 4.21±16.23 | .02 |
| Effect Size | 1.07 | .77 | |