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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.