The comparative effectiveness of Core versus Core+Enhanced implementation strategies in a randomized controlled trial to improve substance use treatment receipt among justice-involved youth

Table 5 Least Square Means (M), Standard Errors (SE), and Contrasts for Cascade Penetration with Covariates (H4)

*Contrast*	M	SE	t	p	Lower 95% CI	Upper 95%CI	Effect size d
Baseline Phase	2.42	0.16	Reference
Pre-Randomization Phase ^a	2.52	0.17	NA	NA	–	–
Early Experiment Phase	2.57	0.17	−4.76	< 0.0001	0.09	0.22	0.16
Late Experiment Phase	2.56	0.17	−4.27	< 0.0001	0.08	0.21	0.14
Maintenance Phase	2.38	0.11	1.12	0.26	−0.11	0.02	0.04

Note. ^a The contrast between Baseline Phase and Pre-Randomization Phase was omitted because it was not involved in hypothesis testing. 95% CI = 95% confidence intervals for the differences between least square means for the contrasts

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