[Retracted] Prediction Models for One-Year Survival of Adult Patients with Acute Kidney Injury: A Longitudinal Study Based on the Data from the Medical Information Mart for Intensive Care III Database
Table 5
Equilibrium test in the training set and the testing set.
Variable
Total (n = 6050)
Training (n = 4538)
Testing (n = 1512)
Statistical magnitude
LOS in ICU, M (Q1, Q3)
3.91 (2.14, 8.07)
3.92 (2.11, 8.12)
3.87 (2.20, 7.81)
Z = −0.088
0.930
First care unit, n (%)
χ2 = 8.111
0.150
CCU
812 (13.42)
611 (13.46)
201 (13.29)
CSRU
1597 (26.40)
1169 (25.76)
428 (28.31)
MICU
2010 (33.22)
1503 (33.12)
507 (33.53)
NICU
61 (1.01)
49 (1.08)
12 (0.79)
SICU
883 (14.60)
689 (15.18)
194 (12.83)
TSICU
687 (11.36)
517 (11.39)
170 (11.24)
AKI stage 48 hr, n (%)
χ2 = 0.240
0.887
1
1538 (25.42)
1160 (25.56)
378 (25.00)
2
2880 (47.60)
2153 (47.44)
727 (48.08)
3
1632 (26.98)
1225 (26.99)
407 (26.92)
Marital status, n (%)
χ2 = 1.077
0.584
Married
2887 (47.72)
2164 (47.69)
723 (47.82)
Not married
2166 (35.80)
1614 (35.57)
552 (36.51)
Widowed
997 (16.48)
760 (16.75)
237 (15.67)
Ethnicity, n (%)
χ2 = 1.682
0.794
Asian
173 (2.86)
129 (2.84)
44 (2.91)
African American
605 (10.00)
444 (9.78)
161 (10.65)
Hispanic
179 (2.96)
137 (3.02)
42 (2.78)
Others
165 (2.73)
128 (2.82)
37 (2.45)
White
4928 (81.45)
3700 (81.53)
1228 (81.22)
Gender, n (%)
χ2 = 0.014
0.906
Male
2717 (44.91)
2036 (44.87)
681 (45.04)
Female
3333 (55.09)
2502 (55.13)
831 (54.96)
LOS in hospital, M (Q1, Q3)
9.19 (5.47, 16.66)
9.36 (5.56, 16.75)
8.86 (5.34, 16.18)
Z = −1.345
0.179
Age, M (Q1, Q3)
67.52 (54.33, 79.56)
67.46 (54.02, 79.62)
67.77 (55.23, 79.44)
Z = 0.624
0.532
Vasopressor (yes), n (%)
1264 (20.89)
947 (20.87)
317 (20.97)
χ2 = 0.007
0.936
Congestive heart failure (yes), n(%)
2025 (33.47)
1512 (33.32)
513 (33.93)
χ2 = 0.189
0.663
Hypertension (yes), n (%)
3377 (55.82)
2537 (55.91)
840 (55.56)
χ2 = 0.056
0.812
CPD (yes), n (%)
1396 (23.07)
1044 (23.01)
352 (23.28)
χ2 = 0.048
0.826
Diabetes uncomplicated (yes), n (%)
1334 (22.05)
980 (21.60)
354 (23.41)
χ2 = 2.179
0.140
Renal failure (yes), n (%)
1202 (19.87)
912 (20.10)
290 (19.18)
χ2 = 0.599
0.439
Liver disease (yes), n (%)
1205 (19.92)
914 (20.14)
291 (19.25)
χ2 = 0.570
0.450
AF (yes), n (%)
1784 (29.49)
1335 (29.42)
449 (29.70)
χ2 = 0.042
0.838
Respiratory disease (yes), n (%)
1456 (24.07)
1090 (24.02)
366 (24.21)
χ2 = 0.022
0.883
Mechanical ventilation (yes), n (%)
5766 (95.31)
4324 (95.28)
1442 (95.37)
χ2 = 0.019
0.891
SBP, mean ± SD
120.22 ± 23.42
120.11 ± 23.36
120.55 ± 23.60
t = 0.63
0.528
DBP, mean ± SD
61.22 ± 15.55
61.22 ± 15.64
61.22 ± 15.28
t = 0.01
0.989
Heart_rate, mean ± SD
86.90 ± 18.70
86.86 ± 18.58
87.03 ± 19.04
t = 0.29
0.769
Respiratory_rate, mean ± SD
19.78 ± 6.23
19.78 ± 6.34
19.78 ± 5.92
t = 0.00
0.997
Temperature, mean ± SD
36.84 ± 0.84
36.85 ± 0.84
36.83 ± 0.85
t = −0.70
0.486
SpO2, mean ± SD
96.95 ± 3.64
96.91 ± 3.85
97.08 ± 2.92
t = 1.80
0.072
MAP, mean ± SD
78.64 ± 16.64
78.75 ± 16.91
78.29 ± 15.81
t = −0.98
0.329
WBC, M (Q1, Q3)
11.50 (7.90, 16.50)
11.60 (7.90, 16.40)
11.40 (7.70, 16.60)
Z = −1.161
0.246
PCT, M (Q1, Q3)
213.00 (143.00, 292.00)
214.00 (145.00, 293.00)
210.00 (139.00, 291.00)
Z = −0.988
0.323
Hemoglobin, mean ± SD
11.25 ± 2.34
11.27 ± 2.31
11.21 ± 2.43
t = −0.74
0.457
RDW, mean ± SD
15.46 ± 2.32
15.43 ± 2.27
15.55 ± 2.48
t = 1.61
0.107
Hematocrit, mean ± SD
33.61 ± 6.79
33.65 ± 6.69
33.50 ± 7.07
t = −0.72
0.474
Albumin, mean ± SD
3.11 ± 0.72
3.11 ± 0.72
3.10 ± 0.73
t = −0.17
0.862
Creatinine, M (Q1, Q3)
1.20 (0.80, 2.00)
1.20 (0.80, 2.00)
1.20 (0.80, 2.00)
Z = −0.229
0.819
INR, M (Q1, Q3)
1.30 (1.10, 1.70)
1.30 (1.10, 1.70)
1.30 (1.10, 1.60)
Z = −0.632
0.527
BUN, M (Q1, Q3)
25.00 (16.00, 43.00)
25.00 (16.00, 42.00)
26.00 (17.00, 44.00)
Z = 1.387
0.165
Glucose, M (Q1, Q3)
134.00 (106.00, 173.00)
134.00 (107.00, 173.00)
133.00 (104.00, 175.00)
Z = −1.080
0.280
Bicarbonate, mean ± SD
22.73 ± 5.44
22.75 ± 5.44
22.64 ± 5.45
t = −0.67
0.500
Sodium, mean ± SD
138.31 ± 5.80
138.28 ± 5.72
138.40 ± 6.05
t = 0.70
0.483
Potassium, mean ± SD
4.30 ± 0.91
4.31 ± 0.92
4.28 ± 0.88
t = −1.00
0.315
Chloride, mean ± SD
104.93 ± 6.84
104.96 ± 6.89
104.82 ± 6.68
t = −0.71
0.478
Calcium, mean ± SD
8.24 ± 1.05
8.24 ± 1.05
8.22 ± 1.03
t = −0.70
0.481
Anion_gap, mean ± SD
16.10 ± 4.88
16.07 ± 4.88
16.17 ± 4.87
t = 0.67
0.501
Bilirubin, M (Q1, Q3)
0.70 (0.40, 1.40)
0.70 (0.40, 1.40)
0.70 (0.40, 1.40)
Z = 0.180
0.857
NLR, M (Q1, Q3)
0.95 (0.68, 1.21)
0.95 (0.68, 1.21)
0.95 (0.69, 1.21)
Z = −0.260
0.795
PLR, mean ± SD
2.34 ± 0.51
2.34 ± 0.52
2.32 ± 0.47
t = −1.33
0.182
NAR, M (Q1, Q3)
0.47 (0.26, 0.67)
0.47 (0.27, 0.67)
0.45 (0.26, 0.66)
Z = −1.132
0.258
NPAR, M (Q1, Q3)
0.47 (0.26, 0.67)
0.47 (0.27, 0.67)
0.46 (0.26, 0.66)
Z = −1.136
0.256
PNI, mean ± SD
1.56 ± 0.12
1.56 ± 0.12
1.56 ± 0.12
t = −0.03
0.979
PT, M (Q1, Q3)
13.70 (13.70, 14.90)
13.70 (13.70, 14.90)
13.70 (13.70, 14.90)
Z = −1.029
0.303
LOS: length of Stay, CSRU: cardiac surgery recovery unit, MICU: medical intensive care unit, NICU: neonatal intensive care unit, SICU: surgical intensive care unit, TSICU: trauma and surgical intensive care unit, COPD: chronic obstructive pulmonary disease, AF: atrial fibrillation, AKI: acute kidney injury, SBP: systolic blood pressure, DBP: diastolic blood pressure, SpO2: peripheral oxygen saturation, MAP: mean arterial pressure, PT: prothrombin time, WBC: white blood cell, LYM: lymphocyte, NEUT: neutrophil, PLT: platelets, RDW: red cell distribution width, INR: international normalized ratio, PNI: prognostic nutritional index, PLR: platelet-to-lymphocyte ratio, NPAR: neutrophil percentage-to-albumin ratio, NLR: neutrophil-to-lymphocyte ratio.
