Table 1.

Characteristics of participants in the overall cohort with at least one completed physical performance task and those with completed TUAG assessments

FactorMissing (n)Overall (n=385)Fast TUAG (n=240)Slow TUAG (n=122)
Demographic data0
 Age (yr)61±1357.7±1266.4±12
 Female63 (16)33 (14)26 (21)
 HMC158 (41)87 (36)56 (46)
 Seattle VAMC169 (44)117 (49)45 (37)
 Baltimore VAMC58 (15)36 (15)21 (17)
Race0
 White239 (62)149 (62)73 (60)
 Other146 (38)91 (38)49 (40)
Education30
 Some high school or less25 (7)12 (5)11 (10)
 Completed high school238 (67)144 (65)78 (70)
 Completed college or more92 (26)65 (29)23 (21)
Current smoking1062 (17)35 (15)24 (20)
Current alcohol use64111 (35)79 (40)28 (28)
Physical examination data
 Systolic BP (mmHg)0132.9±20.7131.6±19.8134.2±21.4
 BMI (kg/m2)031±6.930.2±6.332.5±7.7
 Waist circumference (in.)042.2±6.740.9±644.4±7.3
Laboratory values
 eGFRcysc (ml/min per 1.73 m2)a5847.6±23.351.7±24.841.1±18.3
 eGFR CKD-EPI (ml/min per 1.73 m2)041.3±19.343.6±19.937.8±17.5
 Creatinine (mg/dl)02.2±1.32.1±1.22.2±1.3
 Albuminuria (mg/g Cr)687.6 [11–630]94.7 [9.7–632]62.7 [11.7–575]
 Hemoglobin (g/dl)1612.8±1.913.1±1.912.5±1.9
 Bicarbonate (mmol/L)024.6±3.524.8±3.324.2±3.9
 CRP (mg/dl)295.2±7.74.5±7.15.8±7.6
 Cholesterol (mg/dl)0177±56.6181.1±57.7170.9±55.3
 LDL (mg/dl)17104.6±41.8107.7±43.399.5±38
 HDL (mg/dl)040.3±17.341.3±19.238±13.6
 Triglycerides (mg/dl)0163.4±120169±131.8159.5±102.5
 Albumin (mg/dl)03.8±0.63.9±0.63.8±0.6
 Phosphate (mg/dl)13.8±0.83.8±0.83.9±0.9
Physical performance
 4-m walk (m/s)630.9±0.21±0.20.7±0.2
 TUAG (sec)2311.2±4.58.8±215.9±4.5
 6-min walk (m)76400±100.3436.8±81.9308.5±78.9
 Grip strength (kg)436.15±10.638.7±10.232.4±9.7
Exercise (times per week)a70
 Never83 (26)41 (21)31 (33)
 <134 (11)24 (12)7 (8)
 146 (15)28 (14)16 (17)
 2–371 (23)46 (23)23 (25)
 >381 (26)61 (31)16 (17)
Prevalent disease0
 Diabetes213 (55)118 (49)75 (61)
 Any CAD99 (26)48 (20)41 (34)
 Cancer54 (16)32 (15)17 (17)
Disability
 Use of assistive device1469 (19)18 (8)35 (29)
 ≥1 ADL task5427 (8)13 (6)10 (10)
 ≥1 IADL taska65112 (35)52 (26)49 (50)
 ≥1 mobility taska6477 (24)26 (13)37 (38)
  • Values for categorical variables given as n (%), whereas values for continuous variables given as mean ± SD or median [25th– 75th percentile]. ADL, activity of daily living; IADL, instrumental activity of daily living.

  • a Measured only in the SKS cohort.