Skip to main content

Table 2 Summary of estimates from multivariable linear regression models examining the simultaneous association between predictor variables and outcomes

From: Treatment duration and factors associated with the surgery-first approach: a two-center study

Predictor variables

Outcome is treatment time

Outcome is number of visits

Estimate (95 % CI)

p value

Estimate (95 % CI)

p value

Age (each 1 unit increase)

0.02 (−0.14–0.19)

0.78

0.14 (−0.04–0.32)

0.12

Gender

 

0.22

 

0.65

 Male

1.86 (−1.14–4.86)

0.72 (−2.49–3.92)

 Female

Reference

Reference

Type of malocclusion

    

 Class I

1.59 (−2.62–5.80)

0.45

−1.38 (−5.87–3.12)

0.54

 Class II

−5.83 (−10.92 to −0.75)

0.02

−4.55 (−9.98–0.87)

0.10

 Class III

Reference

Reference

Vertical pattern

    

 Dolicofacial

−2.95 (−6.35–0.44)

0.44

−1.46 (−5.08–2.16)

0.42

 Brachifacial

6.53 (−1.26–14.32)

14.32

5.37 (−2.95–13.69)

0.20

 Normofacial

Reference

Reference

Transverse expansion

 

0.001

 

0.009

 Yes

10.21 (4.26–16.17)

8.64 (2.29–15.00)

 No

Reference

Reference

Significant asymmetry

 

0.99

 

0.55

 Yes

0.01 (−3.28–3.30)

−1.04 (−4.55–2.47)

 No

Reference

Reference

3D Plan

 

0.12

 

0.07

 Yes

−3.44 (−7.77–0.90)

−4.25 (−8.87–0.38)

 No

Reference

Reference

Type of surgery

 

0.47

 

0.92

 Two jaws

−1.10 (−4.14–1.93)

0.16 (−3.08–3.40)

 One jaw

Reference

Reference

Use of TADs

 

0.65

 

0.33

 Yes

0.83 (−2.82–4.48)

1.90 (−2.00–5.80)

 No

Reference

Reference

Genioplasty

 

0.79

 

0.83

 Yes

0.41 (−2.75–3.58)

−0.35 (−3.73–3.02)

 No

Reference

Reference

Center

 

0.31

 

0.03

 USA

1.95 (−1.85–5.74)

6.36 (2.31–10.41)

 Colombia

Reference

Reference