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Table 6 Average days between IRS & assessment and assessment & treatment

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

Authors & date # of agencies Sample size Tx type Stage of enrollment Average # of days
Longhi et al., 1991[17] Multiple 1567 Residential & Outpatient IRS 21
McCarty et al., 2007*[48] 13 6016 Residential & Outpatient IRS 5
Carr et al., 2008[41] Multiple 577 Outpatient IRS 4.4
Brucker & Stewart, 2011[49] Multiple 6629 Outpatient IRS 8.1
Brucker & Stewart, 2011[49] Multiple 2457 Intensive Outpatient IRS 7.9
Quanbeck et al., 2013[50] 192 NA Residential & Outpatient IRS 7.2
Weighted average # of days between IRS & assessment 8.0
Un-weighted average # of days between IRS & assessment 8.9
Hoffman et al., 2011[5] 15 4937 Residential & Outpatient Assessment 8.3
Donovan et al., 2001[29] Multiple 654 Residential Assessment 24.2
    Outpatient Assessment 9.9
Arfken et al., 2001[28] Multiple 2026 Residential & Outpatient Assessment 9.1
Claus & Kindleberger, 2002[30] 1 260 Residential & Outpatient Assessment 4.2
Downey et al., 2003 – women only[47] Multiple 206 Residential & Outpatient Assessment 29
Downey et al., 2003 – men only[47] Multiple 448 Residential & Outpatient Assessment 16
Chawdhary et al., 2007[19] 1 883 Outpatient Assessment 6.2
McCarty et al., 2007*[48] 13 6016 Residential & Outpatient Assessment 10
Brucker & Stewart, 2011[49] Multiple 6629 Outpatient Assessment 4.9
Brucker & Stewart, 2011[49] Multiple 2457 Intensive Outpatient Assessment 3.9
Guerrero, 2013[51] 104 13,329 Residential & Outpatient Assessment 3.4
Weighted average # of days between assessment & treatment enrollment 6.4
Un-weighted average # of days between assessment & treatment enrollment 10.8
  1. NA = Not applicable, sudy did not track people, but rather tested the wait time after IRS by making calls to 192 agencies; *= baseline data before NIATx changes occurred.