Associations between AGT M235T Polymorphism and Cancer: An Updated Meta-Analysis

Table 1

Scale for quality assessment.

Criteria	Score
Source of cases
Selected from population or cancer registry	3
Selected from hospital	2
Selected from pathology archives, but without description	1
Not described	0
Source of controls
Population-based	3
Blood donors or volunteers	2
Hospital-based (cancer-free patients)	1
Not described	0
Specimens of cases determining genotypes
White blood cells or normal tissues	3
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 but <1000	2
≥200 but <500	1
>0 but <200	0