| Grade 6 | Grade 7 | Grade 8 |
---|
Mean | SE | Mean | SE | Mean | SE |
---|
Average | 7650a | 368 | 6467 | 309 | 6014 | 371 |
Control | 6811 | 388 | 6517 | 327 | 5921 | 396 |
Treatment | 8489b | 374 | 6418 | 315 | 6107 | 376 |
- Note. Least-squared means are predicted population marginal means adjusted for unbalanced cell sizes with standard errors adjusted for model covariance parameters. Superscript a indicates a significant mean difference between grade 6 and grades 7 and 8 participants (P < 0.05). Superscript b indicates a significant difference in the mean number of steps compared to the control condition (P < 0.01)