Table 1.
Distributions of demographic and clinical characteristics between propensity score–matched HD and PD cohorts
| Characteristic | HD (n=10,136) | PD (n=10,136) | P Value |
|---|---|---|---|
| Sex | 0.64 | ||
| Female | 5475 (54.0) | 5508 (54.3) | |
| Male | 4661 (46.0) | 4628 (45.7) | |
| Age, yr | 0.16 | ||
| <50 | 4378 (43.2) | 4229 (41.7) | |
| 50–59 | 2535 (25.0) | 2577 (25.4) | |
| 60–69 | 1743 (17.2) | 1830 (18.1) | |
| ≥70 | 1480 (14.6) | 1500 (14.8) | |
| Mean | 53.5±14.6 | 53.3 (14.9) | 0.34 |
| Comorbidity | |||
| Coronary artery disease | 2368 (23.4) | 2297 (22.7) | 0.24 |
| Congestive heart failure | 1793 (17.7) | 1756 (17.3) | 0.49 |
| Stroke | 950 (9.4) | 921 (9.1) | 0.48 |
| Hyperlipidemia | 4371 (43.1) | 4388 (43.3) | 0.81 |
| Hypertension | 9056 (89.3) | 8998 (88.8) | 0.19 |
| Diabetes | 3587 (35.4) | 3627 (35.8) | 0.56 |
| Dementia | 125 (1.2) | 121 (1.2) | 0.80 |
| Atrial fibrillation | 201 (2.0) | 216 (2.1) | 0.46 |
| Medication | |||
| Warfarin | 302 (3.0) | 308 (3.0) | 0.81 |
| Clopidogrel | 940 (9.3) | 933 (9.2) | 0.87 |
| Aspirin | 5888 (58.1) | 5870 (57.9) | 0.80 |
| Year of dialysis initiation | 0.97 | ||
| 1998 | 265 (2.6) | 282 (2.8) | |
| 1999 | 363 (3.6) | 362 (3.6) | |
| 2000 | 474 (4.7) | 481 (4.8) | |
| 2001 | 604 (6.0) | 581 (5.7) | |
| 2002 | 645 (6.4) | 603 (6.0) | |
| 2003 | 646 (6.4) | 665 (6.6) | |
| 2004 | 675 (6.7) | 669 (6.6) | |
| 2005 | 768 (7.6) | 770 (7.6) | |
| 2006 | 854 (8.4) | 865 (8.5) | |
| 2007 | 1087 (10.7) | 1124 (11.1) | |
| 2008 | 1212 (12.0) | 1238 (12.2) | |
| 2009 | 1244 (12.3) | 1239 (12.2) | |
| 2010 | 1299 (12.8) | 1257 (12.4) |
Data are presented as n (%) or mean±SD. Distributions were compared using the t test for mean age and the chi-squared test for sex, age, comorbidity, and medication. HD, hemodialysis; PD, peritoneal dialysis.