Table 2 Relation of using multivariable linear regression analysis.

From: Changes in acoustic cardiographic parameters before and after hemodialysis are associated with overall and cardiovascular mortality in hemodialysis patients

ACP before hemodialysis and △ACP

Multivariable

Unstandardized coefficient β (95% CI)

p

△Heart rate (beats/min)

 Diabetes mellitus

5.886 (0.839, 10.934)

0.023

 Triglyceride (log per 1 mg/dL)

12.431 (2.033, 22.828)

0.020

 Hemoglobin (per 1 g/dL)

2.165 (0.381, 3.948)

0.018

 β-blocker use

− 6.241 (− 12.069, − 0.412)

0.036

△QRS Duration (ms)

 Diabetes mellitus

19.241 (2.648, 35.833)

0.024

△PR interval (ms)

 Hypertension

− 22.306 (− 40.933, − 3.680)

0.020

 Potassium (per mEq/L)

− 12.568 (− 23.980, − 1.157)

0.031

 ACEI and/or ARB use

27.216 (2.739, 51.693)

0.030

△S3

 Systolic blood pressure (per 1 mmHg)

− 0.020 (− 0.041, 0)

0.046

△S4

 Blood flow (per 1 ml/min)

0.022 (0.005, 0.038)

0.011

△SDI

 Diabetes mellitus

1.028 (0.287, 1.770)

0.007

 Systolic blood pressure (per 1 mmHg)

− 0.027 (− 0.050, − 0.003)

0.025

△EMAT (ms)

 Systolic blood pressure (per 1 mmHg)

− 0.284 (− 0.495, − 0.073)

0.009

 Diastolic blood pressure (per 1 mmHg)

0.661 (0.256, 1.067)

0.002

 Total calcium (per 1 mg/dL)

10.666 (1.109, 20.223)

0.029

 Phosphorous (per 1 mg/dL)

18.008 (1.027, 34.988)

0.038

 CaXP product (per 1 mg2/dL2)

− 1.944 (-3.863, − 0.025)

0.047

△EMAT (%)

 Systolic blood pressure (per 1 mmHg)

− 0.056 (− 0.095, − 0.017)

0.006

 Diastolic blood pressure (per 1 mmHg)

0.112 (13,167, 0.187)

0.004

 Triglyceride (log per 1 mg/dL)

2.793 (0.222, 5.363)

0.034

 Total calcium (per 1 mg/dL)

2.123 (0.355, 3.891)

0.019

 Phosphorous (per 1 mg/dL)

3.635 (0.494, 6.776)

0.024

 CaXP product (per 1 mg2/dL2)

− 0.399 (− 0.754, − 0.044)

0.028

△LVST (ms)

 Systolic blood pressure (per 1 mmHg)

0.562 (0.040, 1.084)

0.035

 Diastolic blood pressure (per 1 mmHg)

− 1.119 (− 2.121, − 0.117)

0.029

 Triglyceride (log per 1 mg/dL)

− 53.344 (− 87.722, − 18.966)

0.003

 Total calcium (per 1 mg/dL)

− 24.414 (− 48.055, − 0.772)

0.043

 Blood flow (per 1 ml/min)

0.341 (0.022, 0.660)

0.036

  1. Values expressed as unstandardized coefficient β and 95% confidence interval (CI). Abbreviations are the same as in Table 1.
  2. Covariates in the multivariable model included age, sex, diabetes mellitus, hypertension, coronary artery disease, arteriovenous access type, dialysis vintage, systolic and diastolic blood pressures, albumin, log triglyceride, total cholesterol, hemoglobin, total calcium, phosphorous, CaXP product, potassium, uric acid, Kt/V, blood flow, and medications including ACEIs and/or ARBs, β-blocker, statin and aspirin.
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