Review Article
Analyzing Association of the XRCC3 Gene Polymorphism with Ovarian Cancer Risk
Table 1
Scale for quality assessment.
| Criteria | Score |
| Source of cases | | Population or cancer registry | 3 | Mixed (hospital and cancer registry) | 2 | Hospital | 1 | Other | 0 | Source of controls | | Population based | 3 | Volunteers or Blood bank | 2 | Hospital based (cancer-free patients) | 1 | Not described | 0 | Specimens of cases for determining genotypes | | Blood or normal tissues | 3 | Mixed (blood and archival paraffin blocks) | 1 | Tumor tissues or exfoliated cells of tissue | 0 | Hardy-Weinberg equilibrium in controls | | Hardy-Weinberg equilibrium | 3 | Hardy-Weinberg disequilibrium | 0 | Total sample size | | ≥1000 | 3 | ≥500 and <1000 | 2 | ≥200 and <500 | 1 | <200 | 0 |
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