Table 2 Multivariable-adjusted HRs (95%CIs) for incident CKD by different working conditions risk scores among 65,069 participants

Work conditions risk score

1.29(1.17, 1.42)

< 0.001

1.24(1.13, 1.37)

< 0.001

1.18(1.07, 1.30)

0.001

0

1.00(reference)

-

1.00(reference)

-

1.00(reference)

-

1

1.21(1.05, 1.39)

0.008

1.20(1.04, 1.38)

0.011

1.14(0.99, 1.32)

0.062

2

1.42(1.22, 1.66)

< 0.001

1.38(1.18, 1.61)

< 0.001

1.25(1.07, 1.46)

0.005

3

1.78(1.38, 2.28)

< 0.001

1.65(1.29, 2.12)

< 0.001

1.47(1.14, 1.88)

0.003

4

2.27(1.28, 4.05)

0.005

2.04(1.15, 3.65)

0.015

1.88(1.05, 3.35)

0.033