Table 2.
Results of likelihood ratio tests
| Outcome | χ2 | df | p value |
|---|---|---|---|
| SF-12 P | 311.921 | 7 | < .001 |
| SE for walk | 135.475 | 7 | < .001 |
| SE for stairs | 154.045 | 7 | < .001 |
| SAT-F | 80.138 | 7 | < .001 |
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