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Table 4 Predicting Karnofsky score level at each in-person visit using the logistic regression model including selected interaction

From: Impact of risk factors on functional status in maintenance hemodialysis patients

Variable Estimate SE P value
Intercept 2.54 6.89 0.712
Age 0.20 0.07 0.007
Gender (female as Ref.) 0.25 0.14 0.075
DM 0.09 0.32 0.776
Primary disease subclass (P_A as Ref.) − 6.18 1.12 < 0.001
Use of vitamin D − 0.24 0.14 0.078
Anti-hypertensive agent − 0.35 0.11 0.002
Use of iron − 0.17 0.17 0.324
Parathyroidectomy 0.05 0.18 0.791
Treatment of year − 0.02 0.12 0.876
The number of times per week − 0.52 0.18 0.005
Each dialysis time − 0.54 0.21 0.010
Dialyzer surface area − 0.93 0.23 < 0.001
Hb − 0.96 0.24 < 0.001
Hct 0.32 0.06 < 0.001
WBC − 0.01 0.03 0.691
Albumin 2.14 1.62 0.188
BUN 0.01 4.32E−03 0.039
Creatinine − 0.01 0.38 0.972
Ca 0.04 0.07 0.590
P 0.27 0.35 0.438
Na − 0.04 0.02 0.009
K − 0.42 0.08 < 0.001
Glucose 2.29E−03 9.69E−04 0.018
AST − 0.02 0.01 0.040
Alkaline P 2.26E−03 1.70E−03 0.183
Cholesterol 1.07E−03 1.48E−03 0.470
Triglyceride 5.89E−04 6.61E−04 0.373
Uric acid − 0.05 0.04 0.279
Ferritin 8.62E−04 1.64E−03 0.600
Al − 0.02 0.06 0.704
iPTH − 8.04E−04 1.46E−03 0.581
Kt/V − 0.75 0.23 0.001
nPCR 0.29 0.24 0.241
Ultrafiltration dehydration amount 0.08 0.05 0.093
Cardiothoracic ratio − 0.10 1.07 0.923
Age × albumin − 0.04 0.02 0.043
Primary disease subclass × age 0.06 0.01 < 0.001
Primary disease subclass × creatinine 0.15 0.05 0.004
Albumin × creatinine − 0.07 0.08 0.342
Creatinine × age 1.41E−03 2.85E−03 0.620
Creatinine × treatment of year − 0.02 0.01 0.004
Age × iPTH − 1.18E−05 1.63E−05 0.470
iPTH × cardiothoracic ratio 3.53E−03 2.29E−03 0.123
Treatment of year × age − 2.36E−03 1.15E−03 0.041
Age × ferritin − 1.23E−05 2.07E−05 0.553
Ferritin × P 7.21E−05 1.38E−04 0.602
P × Hb − 0.02 0.03 0.434
Hb × treatment of year 0.03 0.01 0.001