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Table 4 T tests for difference in the averages—quantitative values for group n2 (13 to 18 years of age)

From: Dentofacial characteristics of oral breathers in different ages: a retrospective case–control study

  (n) IMSW IMIW ICSW ICIW
OB 167 46 42 42 45
NB 186 49 46 45 45
Means OB 14.83 47.39 45.55 34.61 27.3
Means NB 15.25 47.02 46.1 34.5 27.81
SD OB 1.76 3.2 3.57 3.22 2.8
SD NB 1.7 3.32 4.22 3.16 2.9
OB* 0.14 0.47 0.55 0.5 0.31
NB* 0.12 0.47 0.62 0.47 0.43
Dif of means −0.426341 0.370896 −0.550207 0.111905 −0.777778
CI 95 % 95 % 95 % 95 % 95 %
IC (−0.789891; −0.062791) (−0.958786; 1.700578) (−2.203110; 1.102696) (−1.250651; 1.474461) (−1.837129; 0.281573)
T value −2.31 0.55 −0.66 0.16 1.46
p value 0.022* 0.581 0.51 0.871 0.148
DF 343 92 85 84 79
  1. *Significant values