Table 3. Estimated parameters in regression models for Z score of 6-minute walking distance in boys and girls .
| β1 | β2 | MSE | |
| Boys (n = 382) | 3.5247 | 0.5443 | 0.0132 |
| Girls (n = 380) | 4.3204 | 0.3813 | 0.0138 |
MSE, mean standard error.
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