Figure 6.4 is titled "Perceived Great Risk of Cigarette and Alcohol Use among Youths Aged 12 to 17: 2002 and 2003." It is a bar graph, with the following note below the graph: "Statistically significant differences (at 0.05 level) between 2002 and 2003 are denoted by '+.'" The horizontal axis of the graph represents frequency of cigarette and alcohol use, and the vertical axis represents the percentage perceiving great risk. There are three categories of frequency of cigarette and alcohol use: Smoke One or More Packs of Cigarettes per Day; Have Four or Five Drinks of Alcohol Nearly Every Day; and Have Five or More Drinks of Alcohol Once or Twice a Week. Within each of these three categories, there is a bar for 2002 and a bar for 2003.
The percentage of youths who perceived that smoking one or more packs of cigarettes per day was a great risk was 63.1% in 2002 and 64.2% in 2003.
The percentage of youths who perceived that having four or five drinks of alcohol nearly every day was a great risk was 62.2% in 2002 and 61.6% in 2003.
The percentage of youths who perceived that having five or more drinks of alcohol once or twice a week was a great risk was 38.2% in 2002 and 38.5% in 2003.
None of these differences were significant at the 0.05 level.