Table 3 Hazard ratios for primary outcome associated with current work schedule

First

Non-shift workers

143,272

582

1,753,205

33.19

Ref

Ref

Shift workers

27,450

134

335,034

39.99

1.41 [1.17, 1.70]

1.30 [1.08, 1.58]

P value

-

-

-

-

 < 0.001

0.006

Second

Shift but non-night shift workers

13,729

71

167,423.4

42.40

Ref

Ref

Night shift workers

13,721

63

167,610.6

37.58

1.09 [0.77, 1.53]

1.04 [0.73, 1.47]

P value

-

-

-

-

0.63

0.83

Third

Some night shift workers

7915

32

96,623.63

33.11

Ref

Ref

Usual/permanent night shift workers

5806

31

70,986.94

43.67

1.32 [0.81, 2.17]

1.25 [0.76, 2.07]

P value

-

-

-

-

0.26

0.37