Table 4 Multivariate logistic regression models to assess factors associated with arterial stiffness assessed as lower pulse pressure amplification values

The whole sample (HL p-value 0.369)

 Constant

8.86e-07

(4.36e-10; 4.97e-04)

 < 0.001

 Age (years)

0.81

(0.68; 0.96)

0.016

 Cardiac index (l/min*1/m²)

0.14

(0.05; 0.36)

 < 0.001

 Reflection coefficient

1.48

(1.31; 1.74)

 < 0.001

Male (HL p-value 0.839)

 Constant

2.34e-05

(1.53e-09; 0.08)

0.016

 Age (years)

0.78

(0.61; 0.96)

0.026

 Cardiac index (l/min*1/m²)

0.10

(0.02; 0.33)

 < 0.001

 Reflection coefficient

1.44

(1.23; 1.79)

 < 0.001

Female (HL p-value 0.193)

 Constant

0.02

(8.9e-07; 188.59)

0.384

 Age (years)

0.90

(0.70; 1.14)

0.413

 Cardiac output (l/min)

0.03

(2.48e-03; 0.24)

0.003

 Systolic volume (ml)

1.37

(1.17; 1.69)

 < 0.001

 AIx@75 (%)

1.28

(1.12; 1.52)

0.001

Child (up to 12 years old) (HL p-value 0.468)

 Constant

9.86e-09

(3.20e-16; 1.71e-03)

0.011

 Age (years)

1.22

(0.59; 2.68)

0.592

 Cardiac index (l/min*1/m²)

0.20

(0.04; 0.80)

0.036

 Reflection coefficient

1.48

(1.24; 1.94)

 < 0.001

Adolescents (13 to 19 years old)

(HL p-value 0.441)

 Constant

2.40e-09

(7.98e-16; 2.28e-04)

0.003

 Age (years)

1.01

(0.69; 1.48)

0.956

 Cardiac index (l/min*1/m²)

0.12

(0.02; 0.42)

0.003

 Reflection coefficient

1.56

(1.30; 2.00)

 < 0.001