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. 2026 Jul 9;17(3):393–400. doi: 10.1016/j.shaw.2026.07.001

Table 3.

Bootstrap indirect effects of work intensity on occupational injuries via sleep quality

Indirect effect Boot SE Boot LLCI Boot ULCI
Working hours per day 0.006 0.006 −0.005 0.017
Working days per week 0.064∗∗∗ 0.015 0.035 0.094
Night-shift days per week 0.053∗∗∗ 0.012 0.031 0.076

Note: ∗p < .05, ∗∗p < .01, ∗∗∗p < .001. SE = Standard error. LLCI = Lower level confidence interval. ULCL = Upper level confidence interval.