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. Author manuscript; available in PMC: 2023 Sep 1.
Published in final edited form as: J Subst Abuse Treat. 2022 Jun 19;140:108829. doi: 10.1016/j.jsat.2022.108829

Table 1.

% of Total Sample Screened and In Need of Treatment

Baseline (6 months) (N=7840) Pre-randomization Activities (6 months) (N=5811) Early Experimental (6 months) (N=5156) Late Experimental (6 months) (N=4999) Maintenance (6 months) (N=5243) TOTAL (N=29049)
SCREENED
 Enhanced 76.6 74.4 77.4 78.7 75.7 76.5
 Core 65.3 60.6 60.1 56.6 50.0 59.1
 TOTAL 71.5 67.7 69.3 68.0 63.4 68.3
IN NEED
 Enhanced 49.1 47.7 46.2 47.6 46.5 47.6
 Core 55.8 49.4 46.4 46.9 43.2 49.0
 TOTAL 52.2 48.5 46.3 47.2 44.9 48.2

Screened: Chi-Square=1009.18, df=1, p<.001. In Need: Chi-Square=5.473, df=1, p<.001