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Risky Behavior in Teens

By T. M McDevitt|J. E. Ormrod
Pearson Allyn Bacon Prentice Hall

The table below shows the percentage of teenager boys and girls who reported engaging in risky behaviors.

Percentage of U.S. Students Grades 9-12 Who Reported Engaging in Risky Behavior

Risky Behavior Girls Boys
Substance Use    
Alcohol (in last 30 days) 45.8 43.8
Tobacco (in last 30 days) 24.6 30.3
Marijuana (in last 30 days) 19.3 25.1
Cocaine (in last 30 days) 3.5 4.6
Inhalants (in last 30 days) 3.4 4.3
Heroin (in lifetime) 2.0 4.3
Methamphetamine (in lifetime) 6.8 8.3
Ecstacy (MDMA; in lifetime) 10.4 11.6
Illegal steroids (in lifetime) 5.3 6.8
Sexual Behaviors    
Had sexual intercourse (in lifetime) 45.3 48.0
Sexually active (had intercourse in past 3 months) 34.6 33.8
No condom use during last intercourse (among sexually active adolescents) 42.6 31.2
Alcohol or drug use at last sexual intercourse (among sexually active adolescents) 21.0 29.8
Had four or more sexual partners (in lifetime) 11.2 17.5
Behaviors That Contribute to Unintentional Injuries    
Rarely or never wore seat belts in car 14.6 21.5
Bicycle riding without helmets (among those who rode bicycle in last 12 months) 84.2 87.2
Rode with a driver who had been drinking alcohol (in last 30 days) 31.1 29.2
Drove car after drinking alcohol (in last 30 days) 8.9 15.0

Source: Centers for Disease Control and Prevention, 2004.

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