Table 2 Impact of demographic and clinical variables on mortality in chronic dialysis patients (n = 252) during follow-up (median follow-up time 3.6 years), univariate associations are shown

Age, per year increment

1.026

1.009 – 1.044

0.002

Gender, male vs female

1.209

0.768 – 1.901

0.412

Currents smoking, yes vs no

1.772

1.125 – 2.790

0.014

Work status

Able to work, yes vs no

0.510

0.186 – 1.398

0.191

Disable to work, yes vs no

1.030

0.659 – 1.610

0.896

Retired, yes vs no

1.162

0.743 – 1.819

0.510

Cause of renal failure

Glomerulonephritis, yes vs no

1.015

0.571 – 1.804

0.959

Diabetic nephropathy, yes vs no

1.704

0.987 – 2.942

0.056

Hypertensive kidney disease, yes vs no

1.147

0.723 – 1.821

0.560

Clinical variables

Dialysis vintage, per month increment

1.009

0.998 – 1-020

0.095

Log-dialysis* vintage, per unit increment

1.284

1.041 – 1.585

0.020

Previous graft failure, yes vs no

1.748

0.926 – 3.299

0.085

Rejected for renal transplantation, yes vs no

1.965

1.063 – 3.635

0.031

Dialysis modality, hemodialysis vs. peritoneal dialysis

1.091

0.632 – 1.883

0.755

Body mass index, per unit (kg/m²) increment

0.985

0.939 – 1.034

0.536

Albumin, per unit (g/l) increment

0.978

0.937 – 1.012

0.176

Hemoglobin, per unit (g/dl) increment

0.879

0.758 – 1.019

0.088

Cholesterol, per unit (mmol/l) increment

0.937

0.747 – 1.176

0.574

Diabetes, yes vs no

1.579

1.002 – 2.487

0.049

Charlsons modified comorbidity index without age, per unit increment

1.260

1.136 – 1.398

<0.001