TABLE 3.
Univariate and multivariate regression analyses of the associations of the AVI or API with other parameters in all subjects
| AVI (AU) | API (AU) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Univariate | Multivariate | Univariate | Multivariate | |||||||
| R | p | ß | p | VIF | R | p | ß | p | VIF | |
| Age (years) | 0.60 | <0.001 | 0.32 | <0.001 | 1.34 | 0.12 | 0.150 | |||
| BMI (kg/m2) | −0.10 | 0.397 | 0.01 | 0.938 | ||||||
| SBP (mmHg) | 0.62 | <0.001 | 0.31 | 0.001 | 1.53 | 0.48 | <0.001 | 0.48 | <0.001 | 1.51 |
| HR (beats/min) | 0.03 | 0.384 | −0.05 | 0.323 | ||||||
| BI (bursts/100 heartbeats) | 0.68 | <0.001 | 0.34 | 0.001 | 1.76 | 0.28 | 0.006 | 0.002 | 0.984 | 1.51 |
The variables entered into the multivariate regression analysis were those with p < 0.10 in the univariate analyses.
Abbreviations: API, arterial pressure‐volume index; AU, arbitrary unit; AVI, arterial velocity pulse index; BI, burst incidence; BMI, body mass index; DBP, diastolic blood pressure; HR, heart rate; R, correlation coefficient; SBP, systolic blood pressure; ß, standardized partial regression coefficient; VIF, variance inflation factor.