Table 3. Baseline Characteristics among Patients Initiating Dialysis in 2008.
| Characteristics | Total (n=8565) | PD (n=1829) | HD (n=6736) | p value* |
|---|---|---|---|---|
| Age (yrs) | 58.0±14.2 | 54.3±14.1 | 58.9±14.1 | <0.001 |
| Male (%) | 5071 (59.2) | 1055 (57.7) | 4016 (59.6) | 0.140 |
| Healthcare Security System | 0.710 | |||
| National Health Insurance | 7578 (88.5) | 1623 (88.7) | 5955 (88.4) | |
| Medical Aid | 987 (11.5) | 206 (11.3) | 781 (11.6) | |
| Comorbidities | ||||
| Diabetes mellitus | 4515 (52.7) | 935 (51.1) | 3580 (53.1) | 0.126 |
| Myocardial infarction | 288 (3.4) | 78 (4.3) | 210 (3.1) | 0.019 |
| Congestive heart failure | 1157 (13.5) | 248 (13.6) | 909 (13.5) | 0.939 |
| Peripheral vascular disease | 645 (7.5) | 113 (6.2) | 532 (7.9) | 0.014 |
| Cerebrovascular disease | 1100 (12.8) | 179 (9.8) | 921 (13.7) | <0.001 |
| Dementia | 154 (1.8) | 20 (1.1) | 134 (2.0) | 0.010 |
| Chronic pulmonary disease | 1481 (17.3) | 290 (15.9) | 1191 (17.7) | 0.070 |
| Connective tissue disease | 210 (2.5) | 53 (2.9) | 157 (2.3) | 0.172 |
| Peptic ulcer disease | 1192 (13.9) | 210 (11.5) | 982 (14.6) | 0.001 |
| Hemiparesis | 132 (1.5) | 12 (0.7) | 120 (1.8) | <0.001 |
| Liver disease | 984 (11.5) | 209 (11.4) | 775 (11.5) | 0.967 |
| Any malignancy | 585 (6.8) | 69 (3.8) | 516 (7.7) | <0.001 |
| Modified CCI | <0.001 | |||
| 0 | 2110 (24.6) | 507 (27.7) | 1603 (23.8) | |
| 1-2 | 2631 (30.7) | 584 (31.9) | 2047 (30.4) | |
| 3-4 | 2384 (27.8) | 471 (25.8) | 1913 (28.4) | |
| ≥5 | 1440 (16.8) | 267 (14.6) | 1173 (17.4) |
PD, peritoneal dialysis; HD, hemodialysis; CCI, Charlson Comorbidity Index.
Age is expressed as the mean±SD, and all other data are expressed as the number (%).
*p-values are calculated by the comparison between PD patients and HD patients.