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Table 2 Descriptive statistics according to the demographics of age, anteroposterior skeletal class, and breathing mode

From: Three-dimensional evaluation of hyoid bone position in nasal and mouth breathing subjects with skeletal Class I, and Class II

  7–9 years (n = 64) 10–12 years (n = 62)
Class I Class II Class I Class II
Mouth breathing (n = 15) Nasal breathing (n = 15)   Mouth breathing (n = 19) Nasal breathing (n = 15)   Mouth breathing (n = 16) Nasal breathing (n = 15)   Mouth breathing (n = 16) Nasal breathing (n = 15)  
SNA° 79.44 (3.89) 79.27 (2.78) NS 80.16 (3.35) 80.37 (3.53) NS 80.76 (4.38) 80.84 (4.46) NS 82.42 (3.46) 82.81 (2.68) NS
SNB° 76.29 (2.98) 76.47 (2.20) NS 73.69 (3.51) 74.00 (3.78) NS 77.10 (4.19) 78.20 (4.20) NS 71.07 (17.19) 76.36 (2.98) NS
ANB° 3.52 (1.15) 2.83 (0.96) NS 6.63 (0.81) 6.33 (0.53) NS 3.64 (1.23) 2.87 (0.91) NS 7.16 (1.17) 6.52 (0.76) NS
FMA° 30.92 (3.78) 29.26 (1.87) NS 31.71 (2.54) 30.10 (3.12) NS 30.94 (3.56) 29.52 (2.58) NS 31.31 (2.98) 30.01 (2.50) NS
Age (years) 8.06 (0.88) 7.86 (0.83) NS 8.15 (0.76) 8.20 (0.86) NS 11.18 (0.75) 11.46 (0.83) NS 10.68 (0.87) 11.26 (0.70) NS
  1. NS, not significant (P > 0.05) using Independent sample t-test