Table 3: Literature search strategy.

Selection steps

• Search topic: Alcohol dehydrogenase

• Database: PubMed

• Years: 1990-2014

Search result
ADH

ADH + genetic polymorphism (GP)
ADH + GP + alcoholism (ALC)
ADH + GP + ALC + asian population
        + African American
        + Japanese
7017

721
187
23
7
28
Applying inclusion criteria for ADH + GP result n = 721
Reductions Criteria not met (n) Remaining (n)
Inclusion criteria not met 310 411
Design, statistics language issues 210 201
Comparison groups/outcome not clear 97 104
Full article not available 14 90
Demographic distribution %
Total remaining n = 90

Asian population (- Japanese and Indian)
Japanese population
Indian population
African American
American Indians
Caucasians


28
32
11
9
8
12