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Table 4 Descriptive statistics and significance probabilities of horizontal and vertical variables

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

  Total Stable Unstable U test
n X IQR n X IQR n X IQR p
Horizontal 72 1.43 1.73 53 1.00 1.35 19 2.50 2.10 .000*
Vertical 50 1.75 1.98 40 1.63 1.65 10 2.88 4.49 .326
  1. Mann-Whitney’s U test between the stable group and the unstable group (Statistical powers were .840, and .581, respectively; Effect size d =0.8) (x median, IQR interquartile range, *: p < .05)