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Table 5 Randomized clinical trials testing same-day access protocols

From: Examining attrition rates at one specialty addiction treatment provider in the United States: a case study using a retrospective chart review

Authors & date Sample size Same day (0 & 1) show rate Days 2 – 7 Odds ratio of showing on days 0 or 1
Stark et al. 1990[42] 38 exp, 22 tau 55% (21) 41% (9) 1.78
Festinger et al. 1996[43] 39 exp, 39 tau 59% (23) 33% (13) 2.88
Festinger et al., 2002[44] 58 exp, 58 tau 64% (37) 40% (23) 2.68
Stasiewicz & Stalker, 1999[45] 32 exp, 96 tau 72% (23) 51% (49) 2.45
Maddox & Desmond 1995*[46] 93 exp, 93 tau 96% (89) 74% (69) 7.74
Average   69% 48% 2.56
  1. Exp = Subjects assigned to same-day or within 24 hours, tau = Treatment as usual_subjects assigned to appointments beyond 24 hours, *= methadone maintenance program-14 days for tau.