Subjects: ANALYSIS of variance; CHI-squared test; COMPARATIVE studies
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Subjects: REHABILITATION of people with alcoholism; CHI-squared test; ALCOHOL drinking
Subjects: CONTROL (Psychology); MENTAL depression; INTERVIEWING
Subjects: CHI-squared test; COCAINE; COMMUNITY health services
Subjects: COCAINE-induced disorders; ATTENTION-deficit hyperactivity disorder; CHI-squared testSPAIN
Subjects: COMPETENCY assessment (Law); SUBSTANCE abuse treatment; AGE distributionSWEDEN; UNITED States
Subjects: SUBSTANCE abuse; CHI-squared test; EPIDEMIOLOGICAL researchFINLAND