Interaction analyses on age by duration and load did not reach statistical significance (P>0.05).
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Duration and intensity of occupational lifting and risk of long-term sickness absence: Prospective cohort study with register follow-up among 45 000 workers.
4
0.0500
0.0516
The sentences
a statistical trendP=0.0516
Age by load showed a statistical trend (P=0.0516).
Table 4 visualizes this hypothesis with several borderline significant estimates.
Fourth, an explanation for the statistical differences in the age-stratified analyses might be due to statistical power, where more workers <50 years are lifting for 1⁄2 and 3⁄4 of the workday than workers ≥50 years, and the lower CI is close to being statistically significant among workers <50 years lifting 3⁄4 of the workday.