Categories | Criteria | Points |
---|---|---|
Internal validity | Generalities | |
Is the hypothesis/aim/objective of the study clearly described? | 3 | |
Are the main findings/results/outcomes clearly described? | 3 | |
Are the characteristics of the patients included described? | (3) | |
Socio-demographic | 1 | |
Disease/treatment-related | 1 | |
Work-related | 1 | |
Study design and methods | ||
Data collection | ||
Population-based | 3 | |
Regionally based (or several settings) | 2 | |
Hospital/centre-based | 1 | |
Were the groups equivalent at baseline (or adjusted)? | (3) | |
Socio-demographic characteristics | 1.5 | |
Work-related characteristics | 1.5 | |
Number subjects included | ||
≥500 | 3 | |
≥50, <500 | 2 | |
<50 | 1 | |
Length of follow-up (since diagnosis or treatment) | ||
≥1 year | 3 | |
≥6 months | 2 | |
≥3 months | 1 | |
Loss of follow-up = less than 5 % | 2 | |
External validity | Number of cancer sites | |
>10 | 3 | |
4–10 | 2 | |
≥3 | 1 | |
Were the subjects representative of the population from which they were recruited? | 3 | |
Total (maximum) | 29 |