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Table 2 Baseline characteristics in each of the groups after matching

From: Effect of renal support therapy on 5-year survival in patients discharged from the intensive care unit

Variable RRT n = 4366 No RRT n = 145,864 Standardized differences P value
Age, (%)
 51–60 12.9 12.6 1.0 0.631
 61–70 22.1 22.1 0.1 0.979
 61–70 29.2 29.2 − 0.1 0.962
 71–80 20.3 21.0 − 1.9 0.398
 81–90 2.0 2.2 − 0.9 0.653
 91–100 0.02 0.05 − 1.4 0.564
Region, (%)
 Bogota 24.5 24.2 0.8 0.709
 Central 24.3 24.7 − 0.9 0.672
 Eastern 14.6 14.5 0.4 0.856
 Pacific 19.6 19.9 − 1.0 0.648
 Other 0.46 0.32 1.9 0.303
Female sex, (%) 59.1 58.8 0.6 0.761
Admission to ICU n (%)
 Congestive heart failure 9.9 9.9 − 0.1 0.971
 Trauma 4.2 4.2 0.0 1.000
 Sepsis 21.5 21.7 − 0.3 0.897
Comorbidities, (%)
 Myocardial infarction 6.3 5.6 2.9 0.135
 Congestive heart failure 11.9 11.7 0.9 0.691
 Peripheral vascular disease 4.2 3.9 1.7 0.446
 Cerebrovascular disease 6.4 5.5 4.1 0.058
 Dementia 7.7 7.8 − 0.4 0.841
 Chronic pulmonary disease 20.2 19.5 1.9 0.391
 Connective tissue disease 4.8 4.9 − 0.8 0.729
 Peptic ulcer disease 12.7 11.6 3.5 0.109
 Mild liver disease 1.6 1.2 2.9 0.202
 Diabetes mellitus 33.5 32.8 1.6 0.481
 Metastasis solid tumor 2.7 2.5 1.4 0.502
 AIDS 0.36 0.23 2.1 0.239
 Any tumor 0.87 0.96 − 1.1 0.653
 Hypertension 66.5 65.6 1.9 0.354
 Renal disease 5.7 5.4 1.5 0.574