Table 1.
Characteristics of patients and community controls
| Characteristic | CKD Stages 4 to 5 (n = 89) | HD (n = 75) | Sleep-SCORE Controls (n = 224) | P |
|---|---|---|---|---|
| Age (years) | 51 (42.5, 64) | 57.5 (46, 67.2) | 59.8 (54.5, 65.2) | <0.001 |
| Controls > CKD,a HD > CKDc | ||||
| Male | 60 (67.4%) | 49 (66.2%) | 113 (50.4%) | 0.006 |
| CKD > controls,b HD > controlsc | ||||
| White | 70 (78.7%) | 45 (60.8%) | 127 (56.7%) | 0.001 |
| CKD > controls,a CKD > HDb | ||||
| High school education | 82 (92.1%) | 63 (85.1%) | 221 (98.7%) | 0.001 |
| Controls > CKD,b controls > HDa | ||||
| Employed | 40 (44.9%) | 11 (14.9%) | 136 (60.7%) | <0.001 |
| Controls > CKD,b controls > HD,a CKD > HDa | ||||
| BMI (kg/m2) | 27.6 (25, 31.2) | 27.2 (23.5, 31.2) | 28.6 (25.8, 32.7) | 0.01 |
| Controls > CKD,b controls > HDb | ||||
| Neck circumference (cm) | 38 (36, 41.5) | 40 (37.2, 43.7) | 38.6 (36.7, 42.7) | 0.06 |
| SBP (mmHg) | 148.2 (132.1, 165.5) | 145.7 (126.6, 169.4) | 131 (122.5, 141.5) | <0.001 |
| CKD, HD > controlsa | ||||
| DBP (mmHg) | 83.7 (73.4, 90.9) | 78.5 (70.0, 88.9) | 79.7 (73.5, 86.5) | 0.040 |
| CKD > controls,b CKD > HDb | ||||
| Glucose (mg/dl) | 93.7 (85, 121) | 119 (96.5, 147.2) | 95 (86, 103) | <0.001 |
| HD > controls,a HD > CKDa | ||||
| Total number of antihypertensives | 3 (2, 4) | 2 (1, 3) | 0 (0, 1) | <0.001 |
| CKD, HD > controls,a CKD > HDb | ||||
| Antidepressants | 13 (14.6%) | 10 (13.7%) | 18 (8%) | 0.15 |
| Smoking | 0.7 | |||
| current | 13 (14.6%) | 8 (10.8%) | 19 (8.5%) | |
| former | 28 (31.5%) | 33 (44.6%) | 106 (47.3%) | |
| never | 48 (53.9%) | 33 (44.6%) | 99 (44.2%) |
Results are presented as medians and interquartile ranges or as percentages. Numbers in parentheses reflect the 25th and the 75th percentile of the variables.
a
P < 0.001;
b
P < 0.01;
c
P < 0.05 for the pairwise comparisons.