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Table 3 Hierarchical multiple regression model for number of leads through CV in the study sample

From: Sex-related differences regarding cephalic vein lead access for CIEDs implantation

Number of leads through CV

B

SE

95% CI for B

Beta

R2

Lower

Upper

Step 1

Male sex

 − 0.07

0.15

 − 0.37

0.23

 − .05

0.006

Age

 − 0.004

0.01

 − 0.02

0.01

 − .06

Constant

1.08

0.57

 − 0.05

2.2

 

Step 2

Male sex

 − 0.16

0.11

 − 0.39

0.07

 − .13

0.482

Age

 − 0.004

0.01

 − 0.02

0.01

 − .06

CV diameter

0.04

0.04

−0.04

0.11

.09

Angle of entrance

0.83

0.12

0.6

1.06

.61**

Number of valves ≤ 1

0.34

0.11

0.12

0.55

.27*

Constant

0.25

0.44

−0.63

1.12

 
  1. R2 = .006 for Step 1; Δ R2 = .476 for Step 2 (P < 0.001) *p < 0.01, **p < 0.001