Table 4.
Multivariate logistic regression analysis (forward method) between UP and NDPM2.5 ≥116 days/12 months, NDPM10 ≥4.5 days/12 months, and other variables (P<0.1 in univariate logistic regression)
| #Variables | Analysis A: multivariate logistic regression (excluding NDPM10 ≥4.5 days/12 months)
|
P-value | Analysis B: multivariate logistic regression (excluding NDPM2.5 ≥116 days/12 months)
|
P-value |
|---|---|---|---|---|
| OR (95% CI) | OR (95% CI) | |||
| Hemodialysis duration (years) | 1.11 (1.08–1.15) | <0.001 | 1.12 (1.08–1.15) | <0.001 |
| Serum albumin (g/dL) | – | – | 0.57 (0.34–0.95) | 0.032 |
| Log ferritin | 1.72 (1.16–2.55) | 0.007 | 1.66 (1.13–2.45) | 0.010 |
| LDL (mg/dL) | 1.01 (1.00–1.01) | 0.006 | 1.01 (1.00–1.01) | 0.003 |
| NDPM2.5 ≥116 days/12 months (yes) | 3.57 (2.50–5.10) | <0.001 | ||
| NDPM10 ≥4.5 days/12 months (yes) | 2.54 (1.78–3.62) | <0.001 |
Notes:
After adjustment for body mass index, DM, HBV, HCV, hemodiafiltration, Kt/Vurea, nPCR, nonanuria, corrected calcium, and log iPTH. ‘–’ represents not significance.
Abbreviations: UP, uremic pruritus; NDPM2.5, the number of days of mean 24-hour PM2.5 ≥35 μg/m3/12 months; NDPM10, the number of days of mean 24-hour PM10 ≥125 μg/m3/12 months; OR, odds ratio; CI, confidence interval; LDL, low-density lipoprotein; DM, diabetes mellitus; HBV, hepatitis B virus; HCV, hepatitis C virus; Kt/Vurea, dialysis clearance of urea; nPCR, normalized protein catabolic rate; iPTH, intact parathyroid hormone; PM2.5, particulate matter with a diameter of <2.5 μm; PM10, particulate matter with a diameter of <10 μm; log, logarithm.