Table 3 

Percentage Correct Responses^{1} to Survey Items on Knowledge about Tobacco Use Prevalence among Peers, High School Students, and Adults Among a Five School Aggregate of 5^{th} Grade Students in Western New York State who were Randomized^{2} to Receive a Tobacco Prevention Program Intervention during the 1998–1999 School Year 

Fall 1998 
Fall 1998 
Spring 1999 



Survey Item: 
Baseline Survey (PreTest) (N = 450) 
Evaluation Survey (Immediate PostTest) (N = 408) 
FollowUp Survey tTest (Delayed Posttest) (N = 371) 

%^{3} 
%^{3} 
pvalue 
%^{3} 
pvalue 



Knowledge of tobacco use prevalence: 

(11) What percentage of kids your age (5^{th} graders) use tobacco every week .... 
30.6 
45.2 
N.S. 
29.3 
N.S. 
(12) What percentage of high school students (9^{th} graders) use tobacco every week ....... 
20.3 
31.1 
N.S. 
20.4 
N.S. 
(13) What percentage of adults use tobacco every week .................. 
4.8 
33.9 
p = 0.0313 
11.5 
N.S. 


^{1}Proportions were compared at the School Level (N = 5), using WilcoxonMatched Pairs/Signed Rank Tests. Pvalues were identified as significant if they were less than or equal to .05, thus rejecting the null hypothesis (that the Intervention had No Effect); n.s. = not significant. ^{2}There were 8 schools originally selected for this group; 1 school dropped out because they could not schedule the Intervention and another 2 schools were unable to schedule the FollowUp (Delayed PostTest) Survey, thus the data presented have complete information for each school at every measurement point. ^{3}Percentages shown are the Medians, which summarize the distribution of correct responses by school. 

Mahoney et al. BMC Family Practice 2002 3:3 doi:10.1186/1471229633 