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Progress in Orthodontics

Table 6 Intergroup comparisons of adjusted means for post-treatment cephalometric measurements with pre-treatment measurements as covariates

From: Dentofacial effects of miniscrew-anchored maxillary protraction on prepubertal children with maxillary deficiency: a randomized controlled trial

Variable

Control group

Treated group

Difference (treated-control)

p value

Adjusted T1 Mean

Adjusted T1 Mean

Mean

95% CI

Or-VR (mm)

51.03

53.62

2.23

1.18–3.29

< 0.001*

Ptm-VR (mm)

18.34

20.06

1.73

1.03–2.43

< 0.001*

A-VR (mm)

57.58

60.57

2.99

1.65–4.33

< 0.001*

B-VR (mm)

59.09

57.51

− 1.57

0.82–2.33

< 0.001*

Pg-VR (mm)

60.21

58.61

− 1.60

0.87–2.33

< 0.001*

A-NPerp (mm)

− 3.09

1.23

4.33

2.36–6.29

< 0.001*

Wits (mm)

− 4.01

− 0.07

3.95

1.88–6.01

< 0.001*

Co-A (mm)

74.77

77.67

2.89

1.35–4.44

< 0.001*

Co-Gn (mm)

104.78

104.29

− 0.49

− 0.19 to 1.18

0.159

SNA (°)

78.73

81.97

3.24

1.28–5.19

0.003*

SNB (°)

81.79

80.89

− 1.90

− 2.32 to 3.19

0.708

ANB (°)

3.07

− 1.08

− 4.15

1.35–6.94

0.005*

SNO (°)

55.16

57.14

1.99

0.81–3.16

0.001*

ANS-Me (mm)

55.32

55.65

0.33

− 0.08 to 0.74

0.115

SN-MP (°)

35.78

36.34

0.57

− 0.44 to 1.58

0.261

SN-PP (°)

11.39

11.59

0.19

− 0.75 to 1.14

0.681

Ar-Go-Me (°)

132.03

130.41

− 1.62

0.48–2.75

0.006*

Is-yMx (mm)

47.89

49.02

1.123

0.65–1.59

< 0.001*

Ms-yMx (mm)

18.87

19.32

0.44

0.01–0.88

0.045*

Ii-yMd (mm)

59.45

60.55

1.10

0.50–1.71

0.001*

Overjet (mm)

− 1.94

1.97

3.90

1.53–6.27

0.001*

Is-PP (°)

116.35

117.54

1.18

− 0.36 to 2.72

0.132

Ii-MP (°)

87.25

87.66

0.42

− 0.22 to 1.05

0.195

Is-xMx (mm)

25.63

25.68

0.05

− 0.24 to 0.34

0.740

Ms-xMx (mm)

19.58

20.18

0.59

− 0.03 to 1.22

0.060

Ii-xMd (mm)

36.76

36.94

0.18

− 0.02 to 0.37

0.074

Overbite (mm)

2.48

1.87

− 0.61

0.21–1.01

0.003*

A’-VR (mm)

73.69

77.37

3.67

3.13–4.21

< 0.001*

Ls-VR (mm)

79.39

81.51

2.11

1.22–3

< 0.001*

Li-VR (mm)

80.30

78.68

− 1.63

1.26–1.99

< 0.001*

B’-VR (mm)

72.03

70.25

− 1.78

1.38–2.17

< 0.001*

Pg’-VR (mm)

75.84

73.48

− 2.36

2.09–2.63

< 0.001*

  1. CI confidence interval
  2. *Statistically significant at P < 0.05, analysis of covariance (intention-to-treat analysis)
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