Table 1.

Baseline characteristics of study participants at the time of referral for kidney transplant evaluation by study group from January 2013 to August 2014

Patient CharacteristicsStudy Population, n=401Intervention, n=196Control, n=205
Median age (IQR), yr54 (45–64)54 (46–63)54 (44–65)
Age categories, yr, N (%)
 18–3962 (16)29 (15)33 (16)
 40–59204 (51)102 (52)102 (50)
 60+135 (34)65 (33)70 (34)
Men, N (%)205 (51)88 (45)117 (57)
Race, N (%)
 White37 (9)13 (7)24 (12)
 Black327 (82)159 (81)168 (82)
 Other37 (9)24 (12)13 (6)
Ethnicity, N (%)
 Hispanic25 (7)17 (9)8 (4)
 Non-Hispanic351 (93)168 (91)183 (96)
Etiology of ESKD, N (%)
 Diabetes140 (35)73 (37)67 (33)
 Hypertension184 (46)88 (45)96 (47)
 Other77 (19)35 (18)42 (21)
Body mass index, kg/m2, N (%)
 <35265 (66)133 (68)132 (64)
 ≥35136 (34)63 (32)73 (36)
Dialysis duration, N (%)
 No dialysis25 (6)14 (7)11 (5)
 ≤2 yr235 (59)111 (57)124 (61)
 2+yr141 (35)71 (36)70 (34)
Comorbidity history, N (%)
 Diabetes186 (46)95 (49)91 (44)
 Hypertension310 (77)155 (79)155 (76)
 Cardiovascular disease255 (64)134 (68)121 (59)
 Cancer41 (10)17 (9)24 (12)
 Missing66 (17)30 (15)36 (18)
Prior transplant at referral, N (%)11 (3)6 (3)5 (2)
Education level, N (%)
 Less than high school129 (32)64 (33)65 (32)
 Completed high school150 (37)75 (38)75 (37)
 Some college101 (25)50 (26)51 (25)
 College or above21 (5)7 (3)14 (7)
Insurance status, N (%)
 Medicare344 (86)163 (86)175 (85)
 Medicaid156 (39)76 (39)80 (39)
 Private39 (10)21 (11)18 (9)
 None5 (1)3 (2)2 (1)
Primary language, N (%)
 English376 (94)179 (91)197 (96)
 Other25 (6)17 (9)8 (4)
Marital status, N (%)
 Married121 (30)59 (30)62 (30)
 Single280 (70)137 (70)143 (70)
Median distance (miles) to transplant center (IQR)26.1 (12.4–86.9)21.4 (12.0–81.0)30.7 (13.1–93.4)
Distance, miles, N (%)
 <1285 (21)49 (25)36 (18)
 12–25111 (28)56 (29)55 (27)
 25–7585 (21)36 (18)49 (24)
 ≥75120 (30)55 (28)65 (32)
Probability of waitlisting, %, N (%)a
 <2069 (17)37 (19)32 (16)
 20–30132 (33)58 (30)74 (36)
 30–40200 (50)101 (52)99 (48)
  • IQR, interquartile range.

  • a As determined by the REDCap risk prediction model applied at the time of referral.