| Effect | Wilks’ Lambda | F value | df Hypothesis | df Error | Sig. |
| Group | 0.288 | 66.884b | 6.000 | 464.000 | 0.000 |
| Time | 0.220 | 273.586b | 3.000 | 232.000 | 0.000 |
| Group * Time | 0.294 | 65.249b | 6.000 | 464.000 | 0.000 |