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Table 1 Baseline Characteristics of Kidney Transplant Recipients by Short Physical Performance Battery (SPPB) Impairment Status, Baltimore, Maryland, 2009–2016

From: Pre-kidney transplant lower extremity impairment and transplant length of stay: a time-to-discharge analysis of a prospective cohort study

Factors Unimpaired
(SPPB Score > 10)
N = 315
Impaired
(SPPB Score ≤ 10)
N = 280
P Value
Recipient factors
 Age (years) 47.8 (14.1) 56.3 (12.6) <  0.001
 Female 39.4 36.1 0.41
Race    0.01
 White 55.2 41.1  
 Black 36.2 50.4  
 Other 8.5 8.8  
Education    0.06
 High school (9–12) or less 40.6 47.0  
 2-year technical school 5.5 9.7  
 College/technical school 31.5 23.9  
 Post-college graduate degree 22.4 19.4  
 Body mass index (kg/m2) 26.7 (5.1) 28.1 (6.2) <  0.01
 Hepatitis C virus positive 7.0 7.6 0.8
 Preemptive transplant 20.3 18.2 0.52
 Years on dialysisa 1.7 (0.1–3.9) 2.4 (0.4–4.8) 0.01
 Previous KT 20.3 15.4 0.12
Cause of end-stage renal disease    <  0.001
 Hypertension 30.8 34.3  
 Diabetes 10.5 21.1  
 Glomerulonephritis 2.9 5.4  
 Other 55.9 39.3  
Transplant factors
 0 Human leukoctye antigen mismatches 15.1 (14.0) 22.0 (15.5) <  0.01
 Cold ischemic time > 24 h 32.7 51.43 <  0.001
 Live donor 44.1 26.1 < 0.001
Donor factors
 Age (years) 37.7 (13.9) 38.5 (15.4) 0.36
 Female sex 49.5 43.9 0.17
 Race    0.42
  White 73.7 68.6  
  Black 17.5 23.2  
  Other 8.8 8.2  
 Donation after cardiac death 19.4 22.2 0.5
 Expanded criteria donor 4 11.1 0.01
 Charlson Comorbidity Indexa 0 (0–2) 1 (0–3) < 0.001
  1. Percentages and mean (SD) are presented unless otherwise noted
  2. aMedian and IQR are presented