Table 2 Descriptive statistics of condylar resorption on a condylar/ramal level.

From: Analysis and prediction of condylar resorption following orthognathic surgery

 

Condylar Resorption (n = 23–5.7%)

No Condylar Resorption (n = 377–94.3%)

p

Mean (sd)

Median [IQR]

Mean (sd)

Median [IQR]

Mandibular posterior displacement (mm)

3.1 (0.9)

3.1 [2.3, 3.4]

0.60 (1.7)

0.7 [− 0.5, 1.6]

< 0.001*a

Vertical Ramal Height Loss (mm)

− 3.9 (1.7)

− 3.4 [− 4.6, − 2.7]

− 0.03 (2.2)

− 0.01 [− 1.3, 1.3]

< 0.001*b

Volumetric change (mm3)

− 230.2 (168.00)

− 209.0 [− 316.2, − 103.9]

− 48.8 (132.8)

− 33.1 [− 106.7, 31.6]

< 0.001*b

Volumetric change (%)

− 17 (11.4)

− 13.6 [− 24.8, − 7.8]

− 3 (8.41)

− 1.87 [− 6.5, 1.90]

< 0.001*b

  1. sd standard deviation, IQR inter-quartile range, p p-value with α = 0.05.
  2. *significant difference.
  3. aA one-way anova was used for the normal variables.
  4. bKruskal-Wallis test for the nonnormal variables as found by a Shapiro–Wilk test.
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