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Table 2 Descriptive statistics for age at the beginning of treatment

From: Analysis of pretreatment factors associated with stability in early class III treatment

  Total Stable Unstable U test
Age n X IQR n X IQR n X IQR p
75 8.50 2.08 55 8.42 1.92 20 9.54 2.96 .465
  1. Mann-Whitney’s U test between the two groups (Statistical power was .840; Effect size d =0.8) (x median, IQR interquartile range)