Table 4.

Summary of Results Pertaining to Alcohol, Cigarette and Marijuana Use in the Full Samples from the Three Project ALERT Evaluations

	Effects on Alcohol Use		Effects on Cigarette Use		Effects on Marijuana Use
Evaluation	Immediate	Long-term	Immediate	Long-term	Immediate	Long-term
West Coast a	---	None	---	None	---	None
South Dakota b	None	None	3 out of 3c	None	1 out of 3d	None
Pennsylvania e	None	None	None	None	None	None

Notes:

^aThe immediate effects of the West Coast evaluation on the total sample were not reported by Ellickson and Bell (1990a). Hence, no entry appears in the table (for a summary of the results of a re-analysis of the published data conducted by the National Research Council Committee see Footnote⁴). The long-term follow-ups refer to those conducted in 9^th, 10^th and 12^th grade (Bell et al., 1993; Ellickson et al., 1993a).

^bImmediate effects of the South Dakota evaluation refer to the 8^th grade follow-up (Ellickson et al., 2003) and long-term effects to the 9^th and 10^th grade follow-ups (Longshore et al., 2007).

^cStatistically significant positive effects were found for all 3 of the outcome variables measured (initiation, weekly use and monthly use).

^dA statistically significant positive effect was found for 1 of the outcome variables measured (initiation) but not for the other 2 (weekly use and monthly use).

^eThe immediate effects of the Pennsylvania evaluation refer to the 7^th and 8^th grade follow-ups and the long-term effects to the 9^th grade follow-up (St. Pierre et al., 2005).