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Table 2 Univariate linear regression analysis of the associations between ABI and study variables

From: Association of Body Fluid Volumes and Body Fat Distribution with Abnormal Ankle-Brachial Index

 

Estimate (95% CI)a

p value

Body fluid volume

  

 Estimated extracellular fluid volume (L)

0.0026 (0.0011, 0.0041)

 < 0.001

 Estimated intracellular fluid volume (L)

0.0015 (0.0006, 0.0024)

0.002

 Estimated total water body volume (L)

0.0010 (0.0004, 0.0016)

 < 0.001

Body composition

  

 Estimated fat mass (kg)

− 0.0014 (− 0.0020, − 0.0008)

 < 0.001

 Estimated fat-free mass (kg)

0.0007 (0.0003, 0.0012)

 < 0.001

 Estimated percent body fat (kg)

− 0.0018 (− 0.0025, − 0.0011)

 < 0.001

Body fat distribution

  

 Total percent fat

− 0.0026 (− 0.0034, − 0.0018)

 < 0.001

 Left arm percent fat

− 0.0018 (− 0.0024, − 0.0012)

 < 0.001

 Right arm percent fat

− 0.0019 (− 0.0025, − 0.0013)

 < 0.001

 Left leg percent fat

− 0.0022 (− 0.0029, − 0.0016)

 < 0.001

 Right leg percent fat

− 0.0021 (− 0.0027, − 0.0015)

 < 0.001

 Trunk percent fat

− 0.0021 (− 0.0029, − 0.0014)

 < 0.001

Demography

  

 Age

− 0.0005 (− 0.0029, 0.0020)

0.715

 Gender

  

  Male

Ref

 

  Female

− 0.0351 (− 0.0488, − 0.0213)

 < 0.001

 Race/ethnicity

  

  White

Ref

 

  Hispanic

− 0.0081 (− 0.0239, 0.0078)

0.309

  Black

− 0.0505 (− 0.0623, − 0.0388)

 < 0.001

  SBP

− 0.0009 (− 0.0014, − 0.0004)

 < 0.001

  DBP

− 0.0005 (− 0.0012, 0.0002)

0.132

Smoking status

  

 Never

Ref

 

 Former

0.0179 (0.0069, 0.0290)

0.002

 Current

− 0.0289 (− 0.0450, − 0.0127)

 < 0.001

Comorbidity

  

 Diabetes

− 0.0226 (− 0.0504, 0.0051)

0.108

 Arthritis

− 0.0153 (− 0.0359, 0.0054)

0.143

 Hypertension

− 0.0166 (− 0.0306, − 0.0026)

0.022

Laboratory measurement

  

 Serum folate (nmol/L)

0.0003 (− 0.0001, 0.0006)

0.099

 Serum albumin (g/dL)

0.0045 (0.0026, 0.0064)

 < 0.001

 CRP (mg/dl)

− 0.0282 (− 0.0424, − 0.0140)

 < 0.001

 WBC count (SI)

− 0.0064 (− 0.0092, − 0.0037)

 < 0.001

 Serum total bilirubin (umol/L)

0.0022 (0.0010, 0.0034)

 < 0.001

 Total cholesterol (mmol/L)

− 0.0043 (− 0.0099, 0.0014)

0.135

 Triglycerides (mmol/L)

− 0.0017 (− 0.0042, 0.0008)

0.182

 Hemoglobin level (g/dl)

0.0030 (− 0.0014, 0.0075)

0.180

 Serum Vitamin B12 (pmol/L)

0.0000 (0.0000, 0.0000)

0.676

 Homocysteine (umol/L)

− 0.0006 (− 0.0026, 0.0014)

0.575

  1. P < 0.05 are shown in bold
  2. ABI ankle brachial index; CRP C-reactive protein; CI confidence interval; DBP diastolic blood pressure; OR odds ratio; SBP systolic blood pressure; SI standard unit; WBC white blood cell
  3. aUnstandardized beta coefficients are reported