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Table 2 Percentage Correct Responses1 to Survey Items on Knowledge of Short-Term Effects and Attitudes about Tobacco Use Among a Five School Aggregate of 5th Grade Students in Western New York State who were Randomized2 to Receive a Tobacco Prevention Program Intervention during the 1998–1999 School Year.

From: Longitudinal impact of a youth tobacco education program

Survey Item: Baseline Survey (Pre-Test) (N = 450) Evaluation Survey (Immediate Post-Test) (N = 408) Follow-Up Survey (Delayed Post-Test) (N = 371)
  Fall 1998 Fall 1998 Spring 1999
  %3 %3 p-value %3 p-value
Knowledge of short-term effects of tobacco:      
(1) Smoking causes bad breath .................... 98.4 100 N.S. 99.7 N.S.
(2) Smokers have yellow teeth and fingers ............ 72.0 96.5 p = 0.0313 95.1 p = 0.0313
(3) Low tar cigarettes are safe ..................... 88.2 92.6 N.S. 94.9 N.S.
(4) Smokers have clean smelling clothes ............ 89.2 91.6 N.S. 91.9 N.S.
(5) Smoking decreases the amount of air that gets into your lungs ........................ 86.5 89.6 N.S. 90.2 N.S.
(6) Smoking 1 pack of cigarettes a day costs several hundred dollars per year................. 81.5 91.8 p = 0.0313 94.3 p = 0.0313
Attitude about tobacco use:      
(7) People who use tobacco are popular and glamorous . . 93.2 91.3 N.S. 96.9 N.S.
(8) Some people start to use tobacco because their friends do ............................ 93.4 95.9 N.S. 96.2 N.S.
(9) Smoking is relaxing ........................ . . 87.2 90.2 N.S. 88.9 N.S.
(10) Advertising tells the truth about the effects of tobacco use. ............................ 73.1 81.0 N.S. 79.9 N.S.
  1. 1Proportions were compared at the School Level (N = 19), using Wilcoxon-Matched Pairs/Signed Rank Tests. P-values 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. 2There 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 Follow-Up (Delayed Post-Test) Survey, thus the data presented have complete information for each school at every measurement point. 3Percentages shown are Medians, which summarize the distribution of correct responses by school.