Table I.
Demographic and clinical characteristics of patients with ESRD by SB status during 2004 through 2008 in 2011 USRDS
| Baseline | SB | No SB
|
p Value vs SB
|
||
|---|---|---|---|---|---|
| Matched Cohort | Entire Cohort | Matched Cohort | Entire Cohort | ||
| 439 | 2,195 | 549,271 | |||
| Mean ± SE age at 1st ESRD service | 40.79 ± 0.91 | 40.75 ± 0.41 | 62.37 ± 0.02 | 0.96 | <0.001 |
| No. age (%): | |||||
| 0-Less than 20 | 72 (16.4) | 360 (16.4) | 6,550 (1.2) | ||
| 20-Less than 40 | 143 (32.6) | 715 (32.6) | 43,282 (7.9) | ||
| 40-Less than 60 | 152 (34.6) | 760 (34.6) | 168,473 (30.7) | ||
| 60+ | 72 (16.4) | 360 (16.4) | 330,958 (60.3) | 1 | <0.001 |
| No. female (%) | 223 (50.8) | 1,115 (50.8) | 242,575 (44.2) | 1 | 0.0051 |
| No. race/ethnicity (%): | |||||
| NonHispanic white | 293 (67.5) | 1,465 (67.5) | 288,841 (53.2) | ||
| NonHispanic black | 54 (12.4) | 270 (12.4) | 151,189 (27.9) | ||
| Hispanic | 72 (16.6) | 360 (16.6) | 73,126 (13.5) | ||
| Other | 15 (3.5) | 75 (3.5) | 29,275 (5.4) | 1 | <0.001 |
| No. ESRD primary cause (%): | |||||
| Diabetes | 77 (17.5) | 681 (31.0) | 242,362 (44.1) | ||
| Hypertension | 59 (13.4) | 333 (15.2) | 149,962 (27.3) | ||
| Glomerulonephritis | 23 (5.2) | 399 (18.2) | 39,963 (7.3) | ||
| Cystic kidney | Not reported* | 96 (4.4) | 12,854 (2.3) | ||
| Urological | 125 (28.5) | 71 (3.2) | 9,718 (1.8) | ||
| Other | 132 (30.1) | 448 (20.4) | 65,256 (11.9) | ||
| Unknown | 19 (4.3) | 167 (7.6) | 29,156 (5.3) | <0.001 | <0.001 |
| No. insurance (%): | |||||
| Employer group | 76 (17.5) | 763 (35.2) | 138,567 (25.5) | <0.001 | <0.001 |
| Medicaid | 245 (56.5) | 687 (31.7) | 135,682 (25.0) | <0.001 | <0.001 |
| Medicare | 217 (50.0) | 508 (23.4) | 286,485 (52.8) | <0.001 | 0.25 |
| Mean ± SE No. UTI hospitalizations/yr | 1.24 ± 0.16 | 0.41 ± 0.15 | 0.82 ± 0.01 | <0.001 | <0.001 |
| Mean ± SE % families in poverty in resident county | 14.26 ± 0.27 | 13.77 ± 0.12 | 14.32 ± 0.01 | 0.056 | 0.87 |
| No. comorbid condition (%): | |||||
| Inability to ambulate or transfer | 130 (30.0) | 83 (3.8) | 35,184 (6.5) | <0.001 | <0.001 |
| Tobacco use, current smoker | 25 (5.8) | 145 (6.7) | 31,897 (5.9) | 0.52 | 1 |
| Alcohol or drug dependence | Not reported* | 68 (3.1) | 13,583 (2.5) | 0.16 | 0.54 |
| Diabetes | 109 (25.1) | 785 (36.2) | 281,690 (51.9) | <0.001 | <0.001 |
| Hypertension history | 288 (66.4) | 1,613 (74.3) | 449,693 (82.9) | 0.0009 | <0.001 |
| Congestive heart failure | 53 (12.2) | 387 (17.8) | 175,597 (32.4) | 0.0040 | <0.001 |
| Ischemic heart disease | 30 (6.9) | 235 (10.8) | 120,910 (22.3) | 0.0146 | <0.001 |
| Other cardiac disease | 23 (5.3) | 170 (7.8) | 82,737 (15.3) | 0.071 | <0.001 |
| Cerebrovascular disease | 12 (2.8) | 101 (4.7) | 50,821 (9.4) | 0.092 | <0.001 |
| Peripheral vascular disease | 30 (6.9) | 156 (7.2) | 76,371 (14.1) | 0.92 | <0.001 |
| Chronic obstructive pulmonary disease | 16 (3.7) | 98 (4.5) | 47,014 (8.7) | 0.52 | <0.001 |
| Ca | Not reported* | 80 (3.7) | 38,079 (7.0) | 0.11 | <0.001 |
| No. hemoglobin less than 10 gm/dl (%) | 206 (52.3) | 991 (49.5) | 237,567 (47.5) | 0.32 | 0.062 |
| No. serum albumin less than 3.5 gm/dl (%) | 204 (61.3) | 995 (57.6) | 270,158 (64.9) | 0.23 | 0.17 |
*
Fewer than 10 patients not reported according to NIDDKD data user agreement.