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Table 3 Differences in school yard utilization by construction status for all periods, reported in number of children observed per number of children per 100 children enrolled in the school

From: An assessment of schoolyard renovation strategies to encourage children's physical activity

  Old LL vs. Control New LL vs. Control New LL vs. Old LL
  mean difference p mean difference p mean difference p
All Children 2.4 .194 7.0 **.003 4.6 .056
Boys 0.8 .416 4.1 **.003 3.3 *.014
Girls 1.7 .087 2.9 **.006 1.2 .264
  1. * p < .05 ** p < .01