Table 2.

Patient characteristics of derivation cohort, stratified by response to the SQ

CharacteristicResponse to SQ (Surprised If Died within the Next 6 Mo)Pa
“No” Response (n = 71)“Yes” Response (n = 379)
Dialysis unit (% [n])n = 71n = 3790.86
    site 114.1 (10)11.9 (45)
    site 29.9 (7)14.5 (55)
    site 329.6 (21)27.2 (103)
    site 435.2 (25)34.8 (132)
    site 511.3 (8)11.6 (44)
Age (yr; mean ± SD)69.2 ± 15.059.3 ± 17.1<0.0001
Male gender (% [n/N])46.5 (33/71)58.7 (222/378)0.06
Race/ethnicity (% [n/N])
    white (versus nonwhite)78.3 (54/69)62.4 (229/367)0.0113
    Hispanic (versus non-Hispanic)15.9 (11/69)14.2 (52/367)0.70
Time on HD (mo)n = 65n = 315
    median (q1 to q3)8.2 (2.5 to 40.3)20.5 (5.3 to 39.0)0.0352
    incident, <3 mo (% [n/N])26.2 (17/65)17.1 (54/315)0.09
Amputation (% [n/N])18.3 (11/60)7.3 (24/330)0.0058
ESRD cause (% [n])n = 70n = 3730.24
    other42.9 (30)46.1 (172)
    diabetic (type 2) nephropathy28.6 (20)27.3 (102)
    hypertensive nephropathy21.4 (15)14.5 (54)
    glomerulonephritis1.4 (1)6.7 (25)
    PKD adult onset (autosomal dominant)1.4 (1)3.2 (12)
    diabetic (type 1) nephropathy4.3 (3)2.1% (8)
Albuminn = 71n = 378
    mean ± SD3.5 ± 0.43.9 ± 0.4<0.0001
    low, <3.5 (% [n/N])33.8 (24/71)11.4 (43/378)<0.0001
CCIn = 71n = 379
    total score (median [q1 to q3])10 (8 to 11)7 (5 to 9)<0.0001
    components (% [n/N])
        AIDS5.9 (3/51)2.2 (6/279)0.13
        congestive heart failure66.7 (40/60)31.3 (96/307)<0.0001
        connective tissue disease9.6 (5/52)7.5 (22/293)0.60
        chronic pulmonary disease34.0 (18/53)13.7 (40/291)0.0003
        cerebrovascular Disease39.3 (22/56)17.3 (52/300)0.0002
        dementia9.8 (5/51)3.6 (10/281)0.0482
        hemiplegia8.2 (4/49)4.6 (13/283)0.30
        leukemia or malignant lymphoma0.0 (0/48)1.1 (3/280)0.47
        myocardial infarction26.9 (14/52)15.8 (46/291)0.06
        ulcer disease2.1 (1/48)4.5 (13/286)0.43
        PVD46.3 (25/54)21.3 (64/300)<0.0001
        diabetes72.2 (39/54)58.2 (189/325)0.06
        liver disease14.0 (7/50)8.9 (25/280)0.26
        cancer (malignant solid tumor)33.3 (17/51)10.8 (29/269)<0.0001
  • a P values are from a t test (age), Wilcoxon rank-sum test (time on HD, CCI score), Fisher exact test (ESRD cause), or a χ2 test (all other variables).