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. Author manuscript; available in PMC: 2010 Apr 1.
Published in final edited form as: Drug Alcohol Depend. 2008 Apr 22;96(1-2):57–68. doi: 10.1016/j.drugalcdep.2008.01.023

Table 1.

Participation in the in-school assessments by condition

LST + SFP 10–14 LST-only Control Undetermined Total N
Pretest 543 622 489 23 1677
Posttest 554 618 496 22 1690
8th grade 539 583 488 23 1633
9th grade 563 556 485 20 1624
10th grade 558 536 464 18 1576
11th grade 522 477 456 17 1472
12th grade 450 428 347 12 1237