Percentage of students who during the past 30 days drove a car or other vehicle one or more times when they had been drinking

What is the Youth Risk Behavior Surveillance System (YRBSS)?
The YRBSS was developed in 1990 to monitor priority health risk behaviors that contribute markedly to the leading causes of death, disability, and social problems among youth and adults in the United States. These behaviors, often established during childhood and early adolescence, include

Tobacco use.
Unhealthy dietary behaviors.
Inadequate physical activity.
Alcohol and other drug use.
Sexual behaviors that contribute to unintended pregnancy and sexually transmitted diseases, including HIV infection.
Behaviors that contribute to unintentional injuries and violence.

What are the components of the YRBSS?
The YRBSS includes national, state, and local school-based surveys of representative samples of 9th through 12th grade students. These surveys are conducted every two years, usually during the spring semester. The national survey, conducted by CDC, provides data representative of high school students in public and private schools in the United States. The state and local surveys, conducted by departments of health and education, provide data representative of the state or local school district.

Percentage of students who during the past 30 days drove a car or other vehicle one or more times when they had been drinking alcohol

2001 Maine Grouped by Sex	Percent	95% Confidence Interval
Total	10.8	(8.4 – 13.2)
Females	9.0	(6.2 – 11.8)
Males	12.3	(9.9 – 14.7)

Percentage of students who carried a weapon such as a gun, knife, or club on one or more of the past 30 days

2001 Maine Grouped by Sex	Percent	95% Confidence Interval
Total	15.4	(11.5 – 19.3)
Females	4.8	(3.5 – 6.1)
Males	25.6	(18.8 – 32.4)

Percentage of students who carried a gun on one or more of the past 30 days

2001 Maine Grouped by Sex	Percent	95% Confidence Interval
Total	4.4	(2.4 – 6.4)
Females	0.3	(0.0 – 0.7)
Males	8.3	(4.9 – 11.7)

Percentage of students who carried a gun on one or more of the past 30 days

2001 Maine Grouped by Sex	Percent	95% Confidence Interval
Total	4.4	(2.4 – 6.4)
Females	0.3	(0.0 – 0.7)
Males	8.3	(4.9 – 11.7)

Percentage of students who carried a weapon such as a gun, knife, or club on school property on one or more of the past 30 days

2001 Maine Grouped by Sex	Percent	95% Confidence Interval
Total	5.2	(3.5 – 6.9)
Females	2.0	(0.7 – 3.3)
Males	8.1	(5.3 – 10.9)

Percentage of students who had been threatened or injured with a weapon on school property one or more times during the past 12 months

2001 Maine Grouped by Sex	Percent	95% Confidence Interval
Total	8.7	(6.5 – 10.9)
Females	5.9	(4.0 – 7.8)
Males	11.3	(8.4 – 14.2)

Percentage of students who were in a physical fight one or more times during the past 12 months

2001 Maine Grouped by Sex	Percent	95% Confidence Interval
Total	30.9	(26.8 – 35.0)
Females	22.4	(17.8 – 27.0)
Males	38.7	(34.0 – 43.4)

Percentage of students who were in a physical fight on school property one or more times during the past 12 months

2001 Maine Grouped by Sex	Percent	95% Confidence Interval
Total	11.3	(8.9 – 13.7)
Females	6.8	(4.9 – 8.7)
Males	15.4	(11.8 – 19.0)

Percentage of students who were ever hit, slapped, or physically hurt on purpose by their boyfriend or girlfriend during the past 12 months

2001 Maine Grouped by Sex	Percent	95% Confidence Interval
Total	12.0	(10.0 – 14.0)
Females	10.7	(8.2 – 13.2)
Males	13.2	(10.2 – 16.2)

Percentage of students who have ever been physically forced to have sexual intercourse when they did not want to

2001 Maine Grouped by Sex	Percent	95% Confidence Interval
Total	7.8	(6.1 – 9.5)
Females	10.3	(7.0 – 13.6)
Males	5.2	(3.2 – 7.2)

Percentage of students less than 18 years of age who were current smokers and purchased cigarettes at a store or gas station during the past 30 days

2001 Maine Grouped by Sex	Percent	95% Confidence Interval
Total	8.8	(4.7 – 12.9)
Females	4.5	(0.2 – 8.8)
Males	14.0	(8.5 – 19.5)

Percentage of students who smoked a whole cigarette for the first time before age 13

2001 Maine Grouped by Sex	Percent	95% Confidence Interval
Total	22.5	(18.4 – 26.6)
Females	19.6	(15.3 – 23.9)
Males	25.2	(19.6 – 30.8)

Percentage of students who had their first drink of alcohol other than a few sips before age 13

2001 Maine Grouped by Sex	Percent	95% Confidence Interval
Total	21.7	(18.6 – 24.8)
Females	17.3	(14.0 – 20.6)
Males	25.6	(21.7 – 29.5)

Percentage of students who tried marijuana for the first time before age 13

2001 Maine Grouped by Sex	Percent	95% Confidence Interval
Total	12.0	(9.7 – 14.3)
Females	9.9	(7.4 – 12.4)
Males	13.8	(10.8 – 16.8)

Percentage of students who used marijuana on school property one or more times during the past 30 days

2001 Maine Grouped by Sex	Percent	95% Confidence Interval
Total	6.9	(5.2 – 8.6)
Females	4.9	(3.4 – 6.4)
Males	8.6	(6.0 – 11.2)

Percentage of students who used heroin one or more times during their life

2001 Maine Grouped by Sex	Percent	95% Confidence Interval
Total	3.9	(2.9 – 4.9)
Females	2.5	(1.3 – 3.7)
Males	5.2	(3.3 – 7.1)

Percentage of students who took steroid pills or shots without a doctor's prescription one or more times during their life

2001 Maine Grouped by Sex	Percent	95% Confidence Interval
Total	5.5	(4.5 – 6.5)
Females	3.1	(1.6 – 4.6)
Males	7.7	(5.3 – 10.1)

Percentage of students who used a needle to inject any illegal drug into their body one or more times during their life

2001 Maine Grouped by Sex	Percent	95% Confidence Interval
Total	2.5	(1.7 – 3.3)
Females	1.6	(0.7 – 2.5)
Males	3.3	(2.2 – 4.4)

Percentage of students who were offered, sold, or given an illegal drug on school property by someone during the past 12 months

2001 Maine Grouped by Sex	Percent	95% Confidence Interval
Total	32.4	(27.8 – 37.0)
Females	26.5	(21.9 – 31.1)
Males	37.8	(32.4 – 43.2)

Of students who had sexual intercourse during the past three months, the percentage who drank alcohol or used drugs before last sexual intercourse

2001 Maine Grouped by Sex	Percent	95% Confidence Interval
Total	24.6	(17.8 – 31.4)
Females	20.5	(12.5 – 28.5)
Males	29.6	(20.1 – 39.1)

Percentage of students who are overweight

2001 Maine Grouped by Sex	Percent	95% Confidence Interval
Total	10.4	(8.7 – 12.1)
Females	5.5	(3.7 – 7.3)
Males	14.8	(12.5 – 17.1)

Percentage of students who received grades of mostly D's and F's during the past 12 months

2001 Maine Grouped by Sex	Percent	95% Confidence Interval
Total	5.7	(4.5 – 6.9)
Females	3.7	(1.9 – 5.5)
Males	7.6	(5.3 – 9.9)