Table 1.
Characteristics of CDS participants with physical activity data (N=1547)
| Variable | Men (n=855) |
Women (n=692) |
P-value |
|---|---|---|---|
| Age | 60.7 ± 14.6 | 59.8 ± 13.8 | 0.32 |
| Race, White | 617 (72%) | 442 (64%) | 0.0005 |
| BMI (kg/m2) | 28.4 ± 6.5 | 31.2 ± 9.1 | <0.0001 |
| Serum albumin (g/dl) | 3.2 ± 0.7 | 3.2 ± 0.7 | 0.60 |
| Serum creatinine (mg/dl) | 7.5 ± 3.8 | 6.2 ± 3.0 | <0.0001 |
| Hemoglobin concentration (g/dl) | 10.2 ± 1.8 | 9.9 ± 1.7 | 0.0006 |
| Peritoneal dialysis | 79 (9%) | 82 (12%) | 0.10 |
| Vascular access type | <0.0001 | ||
| Catheter | 404 (52%) | 361 (60%) | |
| AV graft | 72 (9%) | 82 (14%) | |
| AV fistula | 296 (38%) | 161 (27%) | |
| Comorbidity | |||
| Diabetes | 469 (55%) | 401 (58%) | 0.22 |
| Congestive heart failure | 600 (70%) | 487 (70%) | 0.93 |
| Atherosclerotic disease | 559 (65%) | 494 (71%) | 0.01 |
| Some college education or more | 396 (46%) | 295 (43%) | 0.16 |
| Current smoker | 145 (17%) | 93 (13%) | 0.06 |
| HAP | |||
| MAS | 65.2 ± 14.9 | 57.2 ± 15.1 | <0.0001 |
| AAS | 47.9 ± 18.1 | 39.1 ± 17.4 | <0.0001 |
Abbreviations: AAS, Adjusted Activity Score; AV, arteriovenous; BMI, body mass index; CDS, Comprehensive Dialysis Study; HAP, Human Activity Profile; MAS, Maximum Activity Score.