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Table 1 Variable assignment of unconditional logistic regression analysis of risk factors of renal dysfunction in paint workers

From: Risk factors of renal dysfunction and their interaction in level-low lead exposure paint workers

Variable Definition and variable assignment
Renal dysfunction No = 0, Yes = 1
Age (years) < 25 = 1, 25~ = 2, 37~ 59 = 3
Gender Male = 1, Female = 2
Work year (years) < 2 = 1, 2~ = 2, 9~ 32 = 3
Smoke No = 0, Yes = 1
Drink No = 0, Yes = 1
Wear mask Never = 1, Occasionally = 2, Frequently = 3
Wash hands before meals Never = 1, Occasionally = 2, Frequently = 3
Blood pressure Normal blood pressure = 0, Hypertension =1
Blood lead Negative = 0, Positive = 1