Management of pulmonary arteriovenous malformations involves additional factors aside from the diameter of feeding arteries: a 3-year case-case retrospective analysis

Table 4 Hierarchical multiple regression analysis of relationship between multiple factors and hypoxaemia

Variables	Model1		Model2		Model3		Model4		Model5		Model6		Model7
Variables	Coefficients	Standardized Coefficients	Coefficients	Standardized Coefficients	Coefficients	Standardized Coefficients	Coefficients	Standardized Coefficients	Coefficients	Standardized Coefficients	Coefficients	Standardized Coefficients	Coefficients	Standardized Coefficients
Largest diameter of afferent artery (mm)	− 3.64	− 0.66	− 3.37	− 0.61	− 2.39	− 0.43	− 2.62	− 0.47	− 2.63	− 0.48	− 2.64	− 0.48	− 2.51	− 0.45
Largest diameter of the sac (mm)			− 0.07	− 0.09	− 0.09	− 0.12	− 0.04	− 0.05	− 0.03	− 0.04	− 0.03	− 0.04	− 0.08	− 0.11
Type of PAVMs (1/2/3/4)					− 5.59	− 0.42	− 3.26	− 0.25	− 3.29	− 0.25	− 3.26	− 0.25	− 3.92	− 0.3
Number of PAVMs							− 4.75	− 0.25	− 5.16	− 0.27	− 5.14	− 0.27	− 3.09	− 0.16
Age									− 0.05	− 0.06	− 0.04	− 0.05	0.03	0.04
Gender											0.66	0.02	2.18	0.08
Other lung diseases													− 6.05	− 0.2
R²	0.43		0.44		0.59		0.62		0.62		0.62		0.65
F value	46.93		23.59		28.6		22.84		18.96		15.56		14.92
△R2	0.43		0.01		0.15		0.03		0		0		0.03
△F value	46.93		0.57		22.21		4.53		0.41		0.08		4.8
Sig. △F value	< 0.001		0.45		< 0.001		0.037		0.53		0.78		0.03

ISSN: 1465-993X