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Table 3 Mann-Whitney reveals a statistically significant difference of mouth opening between men and women.

From: Signs and Symptoms of Temporomandibular Joint Disorders Related to the Degree of Mouth Opening and Hearing Loss

Test Statisticsa
  Mouth opening
Mann-Whitney U 19240.000
Wilcoxon W 66826.000
Z -3.512
Asymp. Sig. (2-tailed) .000
  1. a. Grouping Variable: gender