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Table 2 Basic statistics and test results of age and right/left differences for the variables

From: Age-related, interindividual, and right/left differences in anterior-posterior foot pressure ratio in preschool children

  3.5 years old 4 years old 4.5 years old 5 years old 5.5 years old 6 years old 6.5 years old Total Two-way ANOVA Tukey’s HSD Effect size
  Right-left Age Interaction
The ratio of anterior foot pressure in the left foot (%) Mean 24.9 27.5 30.4 29.9 30.8 32.2 34.1 30.0 F-value 37.96* 7.23* 0.84 3.5<4.5,5.5,6,6.5 3.5 to 4.5: 0.44
SD 11.1 10.4 11.2 11.6 11.2 11.5 11.7 11.4 P-value 0.00 0.00 0.54 6.5 4<6, 6.5 3.5 to 5: 0.47
CV 44.6 37.9 36.9 38.8 36.3 35.8 34.2 38.0       3.5 to 5.5: 0.49
Maximum 60.0 58.0 67.5 83.0 70.0 79.5 68.5 83.0       3.5 to 6: 0.62
Minimum 6.0 8.5 9.5 11.0 5.5 11.0 16.0 5.5       3.5 to 6.5: 0.78
Range 54.0 49.5 58.0 72.0 64.5 68.5 52.5 77.5       4 to 6: 0.49
The ratio of anterior foot pressure in the right foot (%) Mean 27.3 28.5 32.0 33.2 32.6 34.6 36.5 32.1       4 to 6.5: 0.66
SD 11.2 10.6 12.0 12.1 12.0 12.6 13.0 12.1       Left to right: 0.18
CV 40.9 37.0 37.5 36.4 36.9 36.2 35.7 37.9       
Maximum 60.0 57.0 73.5 70.5 77.5 81.5 67.0 81.5       
Minimum 4.0 8.5 9.5 8.0 10.0 9.0 14.0 4.0       
Range 56.0 48.5 64.0 62.5 67.5 72.5 53.0 77.5       
  1. *P < 0.05. Because there were no sex differences for the variables, the analysis was conducted by considering boys and girls together. CV, coefficient of variance; SD, standard deviation.