Table 1.
Demographics and clinical characteristics of the patients by MRSA carriage
| Characteristic | MRSA Noncarrier (n = 277) | MRSA Carrier (n = 29) | Pa |
|---|---|---|---|
| Age (years) | 60.07 (11.88) | 60.97 (14.48) | 0.7 |
| Gender, men (%) | 130 (46.93) | 17 (58.62) | 0.2 |
| Marriage (%) | 0.4 | ||
| couple | 246 (88.81) | 24 (82.76) | |
| single | 31 (11.19) | 5 (17.24) | |
| Time on dialysis (months) | 126.13 (120.75) | 153.90 (147.12) | 0.2 |
| Cause of ESRD (%) | 0.3 | ||
| glomerulonephritis | 84 (30.32) | 11 (37.93) | |
| diabetes | 121 (43.6) | 9 (31.03) | |
| hypertension | 31 (11.19) | 2 (6.9) | |
| other | 41 (14.8) | 7 (24.14) | |
| Vascular access (%) | 0.9 | ||
| fistula | 192 (69.31) | 20 (68.97) | |
| graft | 69 (24.91) | 7 (24.14) | |
| catheter | 16 (5.78) | 2 (6.9) | |
| Diabetes (%) | 147 (53.07) | 11 (37.93) | 0.1 |
| Hypertension (%) | 216 (77.98) | 23 (79.31) | 0.9 |
| Coronary artery disease (%) | 34 (12.27) | 4 (13.79) | 0.8 |
| Malignancy (%) | 11 (3.97) | 3 (10.34) | 0.1 |
| Karnofsky performance scale | 75.70 (18.37) | 71.03 (20.41) | 0.2 |
| Concurrent active infection (%)b | 1 (3.45) | 4 (1.44) | 0.4 |
| Recent hospitalization (%)c | 28 (10.11) | 6 (20.69) | 0.09 |
| Recent antibiotics use (%)d | 49 (17.69) | 7 (24.14) | 0.4 |
| Albumin (g/dl) | 4.06 (0.42) | 3.84 (0.61) | 0.01 |
| Serum creatinine (mg/dl) | 10.4 (2.27) | 10.14 (2.32) | 0.6 |
| Total cholesterol (mg/dl) | 175.46 (43.93) | 163.9 (46.53) | 0.2 |
| Triglyceride (mg/dl) | 173.7 (142.57) | 206.86 (246) | 0.3 |
| Hemoglobin (g/dl) | 10.93 (1.58) | 10.55 (2.1) | 0.2 |
| WBC count (1000 cells/mm3) | 7.45 (2.58) | 7.27 (2.39) | 0.7 |
| hsCRP (mg/dl) | 0.99 (2.08) | 1.51 (1.75) | 0.2 |
| Single pool Kt/Ve | 1.56 (0.27) | 1.50 (0.18) | 0.2 |
| Follow-up duration (days) | 613 (598, 639) | 612 (406.5, 639) | 0.2 |
| Censored (%)f | 28 (10.1) | 1 (3.4) | 0.3 |
The data are presented as the means (standard deviation) or number (%). Follow-up duration is presented as median (25th/75th percentile). WBC, white blood cell; hsCRP, high-sensitivity C-reactive protein.
The values represent comparisons between the MRSA noncarrier and MRSA carrier groups. Two-sample t tests were used for the comparison of continuous variables other than follow-up duration. χ2 tests or Fisher's exact tests were used for comparison of categorical variables. The Wilcoxon rank sum test was used for comparison of follow-up duration.
Defined as having clinical infection at study entry.
Defined as hospitalization ≦3 months before study entry.
Defined as any antibiotic use ≦3 months before study entry.
Calculated using the Daugirdas formula.
Censored because of receiving kidney transplantation (n = 5, all were MRSA noncarriers) or transferral to other hemodialysis centers before December 31, 2008.