Parameter | Detail | Score |
---|---|---|
1.Source of cases | Selected from a population or cancer registry | 2 |
Selected from an oncology department or cancer institute | 1 | |
No description | 0 | |
2.Representativeness of controls | Population | 2 |
Population-hospital mixed | 1.5 | |
Hospital | 1 | |
No description | 0 | |
3.Definition of controls | No history of disease | 2 |
No description of source | 0 | |
4.HWEa | Conformity | 2 |
Inconformity | 0 | |
5. Total sample size | >1000 | 2 |
200–1000 | 1 | |
<200 | 0 |