Table 6 Logistic regression analysis of the risk factors on positional dependency.

From: Comparison of polysomnographic and cephalometric parameters based on positional and rapid eye movement sleep dependency in obstructive sleep apnea

Predictor variables

Standardized β

Standard error

Odds ratio

95% CI

P value

Age

− 0.018

0.019

0.982

0.946–1.020

0.347

Gender (men = 1, women = 2)

− 0.660

0.785

0.517

0.111–2.407

0.400

BMI

− 0.227

0.079

0.797

0.683–0.930

0.004*

Severe OSA

− 0.734

0.472

0.480

0.190–1.211

0.120

SNA

− 0.047

0.047

0.954

0.870–1.047

0.321

ANB

0.096

0.073

1.101

0.954–1.270

0.188

AH⊥MP

− 0.017

0.019

0.984

0.947–1.021

0.389

AH-C3

− 0.026

0.036

0.975

0.908–1.046

0.476

SPT

− 0.016

0.049

0.984

0.894–1.083

0.747

PNS-U

0.020

0.043

0.980

0.901–1.065

0.632

NL/PNS-U

− 0.001

0.007

0.999

0.985–1.013

0.858

NAS

0.076

0.065

1.079

0.949–1.227

0.244

SOAS

0.048

0.069

1.049

0.917–1.200

0.483

MOAS

0.016

0.069

1.016

0.888–1.163

0.814

IOAS

0.058

0.067

1.060

0.929–1.210

0.386

HAS

0.036

0.044

1.036

0.951–1.129

0.418

  1. CI, confidence interval; BMI, body mass index; severe OSA, obstructive sleep apnea showing apnea–hypopnea index ≥ 30; SNA, smaller angle which is formed by sella (S), nasion (N), and A point; ANB, smaller angle which is formed by A point, nasion (N), and B point; AH⊥MP, the perpendicular distance between AH and Go-Me line; AH-C3, the distance between AH and the third vertebra; SPT, maximum width of soft palate which is perpendicular to PNS-U line; PNS-U, the distance between PNS and U; NL/PNS-U, smaller angle between ANS-Pm line and PNS-U line; NAS, nasal airway space; SOAS, superior oral airway space; MOAS, middle oral airway space; IOAS, inferior oral airway space; HAS, hyoid airway space.
  2. *Significant difference: p < 0.05.
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