Table 3.

Characteristics of patients stratified by CFS score

VariableCFS Score
1 (n=31)2 (n=72)3 (n=82)4 (n=104)5 (n=46)6 (n=38)7 (n=17)
Age (yr), mean ± SD46±1757±560±1367±1368±1372±1368±11
Age >65 yr, n (%)5 (16)23 (32)31 (38)65 (63)29 (63)30 (79)13 (76)
Men, n (%)21 (68)52 (72)65 (79)68 (65)25 (54)20 (53)12 (71)
Caucasian, n (%)29 (91)60 (85)72 (88)93 (89)43 (93)32 (84)17 (100)
ESRD cause, n (%)
 Diabetic nephropathy0 (0)15 (21)27 (33)40 (38)18 (39)9 (24)7 (41)
 GN7 (23)7 (10)11 (13)8 (8)8 (17)3 (8)3 (18)
 Polycystic kidney disease6 (19)10 (14)4 (5)6 (6)0 (0)0 (0)0 (0)
 Ischemic renal disease5 (16)11 (15)11 (13)23 (22)11 (24)15 (39)1 (6)
 Other9 (29)20 (28)19 (23)18 (17)6 (13)6 (16)3 (18)
 Unknown4 (13)9 (13)10 (12)9 (9)3 (7)5 (13)3 (18)
Comorbid conditions, n (%)
 Diabetes5 (16)25 (35)37 (45)63 (61)26 (57)23 (61)9 (53)
 Previous myocardial infarction1 (3)11 (15)23 (28)48 (46)19 (41)19 (50)5 (29)
 History of stroke1 (3)5 (7)9 (11)15 (14)9 (20)7 (18)4 (24)
 Peripheral vascular disease0 (0)6 (8)12 (15)27 (26)10 (22)11 (29)5 (29)
 Congestive heart failure1 (3)6 (8)17 (21)26 (25)17 (37)14 (37)6 (35)
 Previous or active malignancy3 (10)5 (7)5 (6)8 (8)2 (4)5 (13)2 (12)
 Dementia0 (0)0 (0)0 (0)1 (1)1 (2)4 (11)2 (12)
Charlson Comorbidity Index, median (interquartile range)2 (2–4)3 (2–4)4 (2–5)5 (4–6)5 (4–6)6 (4–7)5 (3–7)
Charlson Comorbidity Index score ≥5, n (%)3 (10)14 (19)30 (37)63 (61)27 (59)24 (63)10 (59)
Type of dialysis, n (%)
 Hemodialysis24 (77)40 (58)65 (79)84 (81)36 (78)34 (89)16 (94)
 Peritoneal dialysis7 (23)30 (42)17 (21)20 (19)10 (22)4 (11)1 (6)
Location of dialysis start, n (%)
 Inpatient4 (13)14 (19)28 (34)32 (31)22 (48)27 (71)13 (76)
 Outpatient27 (87)58 (81)54 (66)72 (69)24 (52)11 (29)4 (24)
Body mass index, median (interquartile range)28 (24–30)29 (25–33)28 (25–34)30 (27–36)29 (24–32)27 (23–31)26 (25–33)
eGFR (MDRD; ml/min per 1.73 m2) at start, median (interquartile range)7 (5–8)8 (6–11)8 (5–10)8 (7–10)9 (6–11)7 (6–10)8 (5–8)
Albumin (g/dl), median (interquartile range)3.5 (3.2–3.8)3.5 (3.2–3.9)3.3 (2.9–3.6)3.2 (2.9–3.6)3.0 (2.7–3.4)2.9 (2.4–3.5)2.5 (2.3–3.0)
  • CFS, Clinical Frailty Scale; MDRD, Modification of Diet in Renal Disease formula.