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Progress in Orthodontics

Table 3 Baseline sample characteristics

From: Three-dimensional oropharyngeal airway changes after facemask therapy using low-dose computed tomography: a clinical trial with a retrospectively collected control group

Variable

Control group (N = 16)

Facemask group (N = 18)

Mean difference

P-value

95% Confidence interval of the difference

Mean

SD

Mean

SD

lower

Upper

Gender(female)†

9 (56.25%)

–

9 (50. %)

–

–

0.716

–

–

Age (year)‡

7.03

0.56

7.81

0.84

−0.77

0.006**

−1.27

−0.28

Observation/treatment period (month)§

12.25

1.00

11.17

2.18

1.08

0.069

−0.09

2.26

  1. SD standard deviation
  2. †Pearson's Chi-square test
  3. ‡Mann–Whitney U test
  4. §Two-sample t-test
  5. **p < 0.01
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