“…Other studies have provided inconsistent results in evaluating main effects of ethnicity on addiction treatment outcomes. Comparisons of Black (African-American) and White subgroups have shown better (Stack, Cortina, Samples, Zapata, & Arcand, 2000), similar (Brower & Carey, 2003;Henggeler, Melton, & Smith, 1992), and worse (Booth, Blow, Cook, Bunn, & Fortney, 1992) overall outcomes for Blacks. Native Americans have similarly been reported to have better (Booth et al, 1992), similar (Villanueva et al, 2003), and worse overall treatment outcomes (Query, 1985).…”