| | Crude model | Adjusted model | Characteristics | (95% CI) | | (95% CI) | |
| Age (year) | -0.03 (-0.08, 0.01) | 0.129 | -0.03 (-0.07, 0.02) | 0.216 | Gender (male vs. female) | -0.43 (-1.24, 0.39) | 0.305 | -0.28 (-0.93, 0.36) | 0.389 | Race (Han vs. other) | 0.73 (-0.15, 1.60) | 0.103 | -0.06 (-0.73, 0.62) | 0.871 | Marriage (widowed vs. married) | 0.31 (-0.86, 1.48) | 0.601 | 0.10 (-0.84, 1.05) | 0.834 | Educational level | -0.19 (00.73, 0.34) | 0.475 | -0.15 (-0.61, 0.32) | 0.545 | Household annual income | -0.40 (-0.94, 0.13) | 0.139 | -0.14 (-0.57, 0.29) | 0.529 | Occupational exposure history | 1.21 (0.10, 2.31) | 0.032 | 0.33 (-0.54, 1.19) | 0.462 | Hair arsenic (μg/g) | 0.22 (0.07, 0.38) | 0.005 | 0.12 (0.01, 0.24) | 0.047 | Pigmentary changes | 0.48 (-1.01, 1.97) | 0.527 | -0.62 (-1.77, 0.52) | 0.284 | Hyperkeratosis | 0.50 (-0.40, 1.39) | 0.275 | 0.13 (-0.55, 0.82) | 0.709 | Itch NRS | 0.84 (0.74, 0.93) | <0.001 | 0.80 (0.70,0.90) | <0.001 | PSQI | 0.18 (0.07, 0.28) | 0.001 | 0.03 (-0.05, 0.11) | 0.464 | GAD-2 | 0.43 (0.08, 0.78) | 0.016 | 0.01 (-0.41, 0.43) | 0.977 | PHQ-2 | 0.43 (0.09, 0.77) | 0.014 | 0.10 (-0.32, 0.52) | 0.635 |
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