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Table 1 Demographic data of the study samples

From: Cephalometric norms for the upper airway of 12-year-old Chinese children

   Age range   Range
  n Mean SD Median Minium Maxium
Chinese children      
Male 224 12.5 0.3 12.5 12.0 12.9
Female 201 12.5 0.3 12.5 12.0 12.9
Differencea   0.0     
Chinese adults       
Male 29 - - - 18.0 35.0
Feame 45 - - - 16.0 42.0
Differenceb   -     
Caucasian       
Male 61 12.5 0.2 12.5 12.0 12.9
Female 47 12.4 0.3 12.5 12.0 12.9
Differencea   0.1     
  1. aNone of the differences between the samples were statistically significant.
  2. bStatistically significance could not be calculated.