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Table 1 Baseline characteristics of participants before and after propensity score matching

From: Dementia is a risk factor for major adverse cardiac and cerebrovascular events in elderly Korean patients initiating hemodialysis: a Korean national population-based study

  Before matching After matching
  No Dementia (n = 9,868) Dementia (n = 303) P-value No Dementia (n = 504) Dementia (n = 252) P-value
Age 71.7 ± 5.3 74.6 ± 5.9 <0.001 74.5 ± 5.6 74.6 ± 5.7 0.729
Male sex 5,346 (54.2) 136 (44.9) 0.002 243 (48.2) 111 (44.0) 0.315
Health security system
 National health insurance 8,840 (89.6) 261 (86.1) 0.067 446 (88.5) 214 (84.9) 0.203
 Medical aid 1,028 (10.4) 42 (13.9)   58 (11.5) 384 (15.1)  
Comorbidities
 Diabetes 5,413 (54.9) 175 (57.8) 0.347 304 (60.3) 142 (56.3) 0.333
 Cerebrovascular disease 1,521 (15.4) 131 (43.2) <0.001 223 (44.2) 107 (42.5) 0.697
 Hemiparesis 152 (1.5) 15 (5) <0.001 29 (5.8) 12 (4.8) 0.691
 Acute myocardial infarction 459 (4.7) 11 (3.6) 0.487 14 (2.8) 9 (3.6) 0.708
 Congestive heart failure 1,829 (18.5) 70 (23.1) 0.053 115 (22.8) 60 (23.8) 0.831
 Peripheral vascular disease 792 (8) 38 (12.5) 0.007 64 (12.7) 29 (11.5) 0.725
 Chronic pulmonary disease 2,205 (22.3) 58 (19.1) 0.211 96 (19.5) 50 (19.8) 0.871
 Connective tissue disease 314 (3.2) 7 (2.3) 0.491 9 (1.8) 4 (1.6) 1.000
 Peptic ulcer disease 1,694 (17.2) 47 (15.5) 0.499 88 (17.5) 40 (15.9) 0.656
 Liver disease 885 (9) 20 (6.6) 0.186 35 (6.9) 15 (6.0) 0.717
 Any cancer 841 (8.5) 30 (9.9) 0.459 68 (13.5) 26 (10.3) 0.258