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. Author manuscript; available in PMC: 2013 Jun 1.
Published in final edited form as: Obesity (Silver Spring). 2012 May 4;20(12):2354–2360. doi: 10.1038/oby.2012.120

Table 4.

Univariate regression analysis of inspiratory pressure swings (Δ PEs)

Sitting Δ PEs Supine Δ PEs
R2 R2
BMI 0.13* 0.19*
Weight 0.08 0.07
Height 0.03 0.13*
Gender 0.04 0.06
Asthma dx 0.27* 0.31*
Body
Measurements 		Neck 0.14* 0.22#
Chest 0.09 0.17*
Waist 0.16* 0.25*
Hip 0.10 0.15*
Waist/Hip 0.11 0.16*
Spirometry
Sitting 		FEV1 0.29* 0.48*
FEV1 %pred 0.43* 0.52*
FVC 0.2* 0.39*
FVC %pred 0.29# 0.42*
FEV1/FVC 0.2* 0.17*
Spirometry
Supine 		FEV1 0.25# 0.43*
FEV1 %pred 0.33# 0.47*
FVC 0.19* 0.37*
FVC %pred 0.27# 0.39*
Multivariate regression analysis of inspiratory pressure swings
Coefficient Standard Error of
coefficient 		Standardized coefficient
Sitting FEV1/FVC −11.26 3.39 −0.42
FVC %predicted,
sitting		 −0.087 0.021 −0.52
p = <0.001 R2 = 0.47
Supine
FEV1/FVC −17.19 5.05 −0.39
FVC %predicted,
sitting		 −0.08 0.0.14 −0.63
p = <0.001 R2 = 0.57
*

p<0.05

#p<0.01