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Table 6 T test for differences of averages- Quantitative values for group n3 (19 to 57 years of age)

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

  (n) IMSW IMIW ICSW ICIW
OB 151 41 36 43 43
NB 161 43 39 37 37
Means OB 26.17 47.93 47.07 35.01 28.37
Means NB 27.95 46.7 44.65 34.86 27.64
SD OB 6.71 4.01 4.09 4.57 3.03
SD NB 7.35 4.29 4.74 3.61 2.91
OB* 0.55 0.63 0.68 0.7 0.46
NB* 0.58 0.65 0.66 0.79 0.48
Dif of means −1.77813 1.22915 2.4156 0.146763 0.736958
CI 95 % 95 % 95 % 95 % 95 %
IC (−3.34477; −0.21148) (−0.57221; 3.03052) (0.38313; 4.44807) (−1.675761; 1.969287) (−0.587233; 2.061149)
T value −2.23 1.36 2.37 0.16 1.11
p value 0.026* 0.178 0.021* 0.873 0.271
DF 309 81 72 77 77
  1. *Significant
  2. There was a significant difference between the OB and NB: OB are younger, and the inferior molar widths are larger than the superior molar widths