Table 1.

Participant characteristics by duration of predialysis care

CharacteristicOverall, n=3152Predialysis CareAny Predialysis Care, d
No, n=738Any, n=24141–119, n=264120–364, n=305≥365, n=1845
Demographics
 Age, yr64±1563±1665±1563±1664±1665±15
 Age ≥65 yr1726 (55)377 (51)1349 (56)140 (53)153 (50)1056 (57)
 Men1928 (61)472 (64)1456 (60)152 (58)195 (64)1109 (60)
BMI, kg/m228.4±7.228.3±7.728.4±7.027.7±7.427.5±6.428.6±7.1
Presence of comorbidities
 Diabetes1656 (53)292 (40)1364 (57)135 (51)174 (57)1055 (57)
 Coronary artery disease1067 (34)251 (34)816 (34)77 (29)95 (31)644 (35)
 Congestive heart failure937 (30)248 (34)689 (29)72 (27)87 (29)530 (29)
 Other cardiac disease907 (29)273 (37)634 (26)58 (22)85 (28)491 (27)
 Cerebrovascular disease490 (16)100 (14)390 (16)32 (12)45 (15)313 (17)
 Peripheral vascular disease532 (17)121 (16)411 (17)42 (16)49 (16)320 (17)
 Cancer633 (20)173 (23)460 (19)74 (28)63 (21)323 (18)
 Chronic obstructive lung disease215 (7)60 (8)155 (6)15 (6)14 (5)126 (7)
 Polycystic kidney disease111 (4)3 (0.4)108 (4)4 (2)5 (2)99 (5)
 Gastrointestinal bleeding299 (9)91 (12)208 (9)20 (8)20 (7)168 (9)
Setting of dialysis starts
 Outpatient1400 (44)15 (2)a1385 (57)111 (42)169 (55)1105 (60)
 Inpatient1752 (56)723 (98)1029 (43)153 (58)136 (45)740 (40)
Modality of dialysis initiation
 CRRT228 (7)182 (25)46 (2)5 (2)5 (2)36 (2)
 HD2302 (73)543(74)1759 (73)234 (89)237 (78)1288 (70)
 PD622 (20)13 (2)609 (25)25 (9)63 (21)521 (28)
Laboratory measurements
 eGFR, ml/min per 1.73 m27.5 [5.6–10.2]8.2 [5.2–14.7]7.3 [5.7–9.6]7.2 [5.5–9.7]7.3 [5.6–9.6]7.4 [5.7–9.6]
 eGFR, ml/min per 1.73 m2, categoryb
  <102310 (74)430 (59)1880 (78)201 (76)237 (78)1442 (78)
  10–15532 (17)121 (17)411 (17)41 (16)47 (15)323 (18)
  >15296 (9)178 (24)118 (5)21 (8)20 (7)77 (4)
  Missing1495113
 Serum albumin, g/dl3.2±0.72.7±0.73.3±0.73.1±0.73.2±0.73.3±0.7
 Serum albuminb
  <3.6 g/dl2070 (67)613 (88)1457 (61)181 (71)197 (65)1079 (59)
  Missing7842368424
 Hemoglobin, g/dl9.7±1.69.3±1.79.8±1.69.3±1.79.7±1.69.9±1.5
  • Values for categorical variables are given as count (percentage); values for continuous variables are given as mean±SD or median [interquartile range]. BMI, body mass index; CRRT, continuous RRT; HD, hemodialysis; PD, peritoneal dialysis.

  • a These 15 patients had no outpatient nephrology care before starting dialysis, but they were seen by a nephrologist in an emergency department and stable enough to start dialysis in an outpatient setting without being admitted to hospital.

  • b Values do not sum up to subtotal due to missing data.