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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 2.

Percentage of Youth with Substance Use Treatment Need who were Referred to Treatment, by Experimental Time Period and Condition

Study Condition Time Period
T1 Baseline (6 months) (N=4089) T2 Pre-randomization Activities (6 months) (N=2820) T3 Early Experimental (6 months) (N=2386) T4 Late Experimental (6 months) (N=2362) T5 Maintenance (6 months) (N=2355) TOTAL (N=14012)
Enhanced (N=7283) 18.0 19.7 23.8 27.5 21.9 21.6
Core (N=6729) 27.1 30.8 32.4 33.9 34.1 31.0
TOTAL (N=14012) 22.5 25.2 27.9 30.6 27.5 26.1

NOTE: Dark line indicates randomization of sites into Core and Enhanced conditions

Chi-Square=159.23, df=1, p<.001