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

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

Variables Model1 Model2 Model3 Model4 Model5 Model6 Model7
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