Table 6 Assignment of factor-specific variables

y

WAI

1 = medium, 2 = good, 3 = excellent

×1

Sex

0 = male, 1 = female

×2

Age

Accurate values

×3

Number of working years

Accurate values

×4

Education level

0 = bachelor’s degree or above, 1 = Junior college, 2 = High school, 3 = Junior high school and below

×5

Marital status

0 = Unmarried, 1 = Married

×6

Professional title

0 = Intermediate and above, 1 = Primary, 2 = None

×7

Income

Accurate values

×8

Work units

0 = Mining unit, 1 = Beneficiation unit, 2 = Smelting unit

×9

Job burnout

0 = Zero burnout, 1 = Mild burnout, 2 = Moderate burnout, 3 = High burnout