Those who were treated with radiotherapy or radiotherapy plus surgery had an HR of 0.63 (95% CI: 0.39 1.0), corrected for age and work ability, of returning to work and were thus 1.6 times more likely to stay off work than patients with surgery alone.
Patients treated with chemotherapy, either alone or in combination with other treatment modalities, had an HR of 0.41 (95% CI: 0.25 0.69) and their risk of staying off work was therefore 2.4 times higher than patients treated with surgery alone, corrected for age and work ability.
If occupation is corrected for total duration of work, it is clear that jobs requiring heavier labour (higher score on the classification of work (Table 1) are associated with a greater risk of developing ulnar nerve compression at the elbow.
For bituminous coal in coal dust, the reference criterion used was the maximum allowable level established by the American Conference of Governmental Industrial Hygienists (ACGIH), corrected for 8 hours of work six days a week, of 0.70 mg/m.
For crystalline silica, the reference criterion used was the maximum allowable level established by the American Conference of Governmental Industrial Hygienists (ACGIH), corrected for 8 hours of work six days a week, of 0.02 mg/m.
All reported P values are Bonferroni corrected for multiple testing (four working memory tasks).
It is possible that our current findings differ from others' work due to differences in the study populations and statistical models employed, although previous work has corrected for similar factors such as age, gender and comorbidity [ 3, 4].
Even more interesting for readers of Science Careers is that apparently the same is true in the physical and life sciences: no salary difference between men and women as long as you correct for hours worked and other factors.
