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. 2014 Aug 19;2(2):e21. doi: 10.2196/medinform.3560

Table 2.

Evidence degree assignment criteria for clinicogenomic associations.

Order of preference Value
Credibility of referenced article

Citation number of article (1-15)=1, (16-50)=2, and (>50)=3

Type of study and number of authors (Research article and author number <10) =1; (research article and ≤10 author number <35)=2; (research article and ≤35 author number)=3; (meta-analysis and author number<7) =2; and (meta-analysis and ≥7 author number)=3
Reliability of study

Race and ethnicity of studies population Other races (Africans, Asians, etc)=1; mixed=2; and Caucasians=3

Sample size (each of case and controls) (<100)=1; (≥100 and <1000)=2; and (>1000)=3
Scientific familiarity of SNP-disease relationship

Number of article for SNP-prostate cancer relationship in PubMed (<7)=1; (≥7 and <19)=2; and (≥20)=3

Number of cumulative models which involve SNP allele None=1, (<3)=2, and (≥3) =3
Degree of evidence quality

=Total value/6
(<1.5)= weak; (≤1.5 and <2.3)= moderate; and (≤2.3)= strong