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Table 4 Least-squared means of typical steps/day between control and treatment phases across grades

From: Changes in school-day step counts during a physical activity for Lent intervention: a cluster randomized crossover trial of the Savior’s Sandals

  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
  1. 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)