[yrbs01.htm, updated 12/06]
Geographic Area/Year
Total
Female
Male
National
2005
28.5
29.6
27.2
CI
(26.6-30.4)
(27.2-32.0)
(25.2-29.2)
2003
30.2
31.1
29.2
(28.1-32.3)
(29.1-33.1)
(26.6-31.8)
2001
30.7
31.8
(28.7-32.7)
(27.5-31.7)
(29.5-34.1)
1999
33.1
31.7
34.4
(30.7-35.5)
(28.8-34.6)
(31.8-37.0)
1997
36.6
34.5
38.3
(34.5-38.7)
(32.3-36.7)
(35.8-40.8)
1995
38.8
37.8
39.5
(34.9-42.7)
(33.5-42.1)
(35.1-43.9)
1993
35.3
36.3
(32.7-37.9)
(31.4-37.6)
(33.5-39.1)
1991
39.9
39.8
40.0
(37.1-42.7)
(36.9-42.7)
(37.0-43.0)
State
Alabama
28.8
25.7
31.9
(26.0-31.6)
(22.3-29.1)
(28.5-35.3)
26.1
32.2
(26.1-32.3)
(21.7-30.5)
(27.1-37.3)
33.7
35.0
32.0
(30.9-36.5)
(31.5-38.5)
(27.1-36.9)
34.7
31.0
38.1
(32.0-37.4)
(27.2-34.8)
(35.2-41.0)
40.3
38.7
41.5
(37.5-43.1)
(35.2-42.2)
(38.6-44.4)
38.4
34.9
41.6
(35.9-40.9)
(31.9-37.9)
(38.6-44.6)
39.7
37.9
41.2
(37.5-41.9)
(35.1-40.7)
(38.3-44.1)
42.7
39.0
46.2
(40.4-45.0)
(36.7-41.3)
(42.1-50.3)
Alaska
-
25.0
24.7
(22.2-27.8)
(20.4-29.6)
(21.7-27.7)
Arizona
34.3
(32.1-36.5)
(32.2-37.6)
(30.7-36.7)
33.8
(32.1-38.5)
(32.7-40.5)
(29.7-37.9)
Arkansas
27.8
26.5
29.0
(24.7-30.9)
(22.0-31.0)
(25.3-32.7)
31.2
29.9
32.5
(28.1-34.3)
(27.2-32.6)
(27.8-37.2)
34.0
30.9
36.9
(31.1-36.9)
(26.5-35.3)
(33.9-39.9)
41.4
39.3
43.4
(38.3-44.5)
(35.8-42.8)
(39.1-47.7)
41.9
44.5
(39.2-44.6)
(36.0-42.6)
(41.3-47.7)
Colorado
26.9
29.8
24.0
(22.4-31.4)
(24.5-35.1)
(18.9-29.1)
38.0
38.6
37.4
(34.6-41.4)
(34.4-42.8)
(33.7-41.1)
Connecticut
29.7
27.5
(27.3-32.1)
(28.9-34.9)
(24.1-30.9)
38.2
(35.1-41.5)
(34.2-42.6)
(34.6-41.8)
Delaware
26.7
26.6
27.1
(24.7-28.7)
(23.9-29.3)
(24.2-30.0)
29.1
28.0
30.1
(27.1-31.1)
(25.7-30.3)
(27.4-32.8)
(27.2-31.2)
(24.3-29.1)
(29.1-34.9)
32.4
32.9
(29.6-35.2)
(28.3-35.5)
(29.5-36.3)
District of Columbia
24.1
23.1
24.8
(22.1-26.1)
(20.6-25.6)
(21.6-28.0)
26.4
(26.4-31.8)
(23.1-29.7)
(28.2-35.6)
31.4
28.9
(28.6-34.2)
(25.8-32.0)
(30.2-38.6)
34.6
29.4
40.1
(31.7-37.5)
(25.9-32.9)
(35.8-44.4)
31.3
(30.5-35.3)
(28.6-34.0)
(30.9-38.3)
Florida
(25.4-29.0)
(25.3-29.7)
(24.1-28.9)
30.4
(29.0-31.8)
(29.4-33.0)
(27.1-32.1)
31.5
30.3
(29.0-34.0)
(27.4-33.2)
(29.8-35.2)
Georgia
(23.5-29.9)
(21.2-31.6)
(23.2-30.6)
23.5
24.4
(21.2-26.8)
(19.8-27.2)
(21.1-27.7)
Hawaii
33.0
(30.2-35.8)
(33.0-39.6)
(25.3-34.1)
(33.3-43.3)
(30.2-43.0)
(35.0-45.2)
36.1
37.0
35.1
(32.6-39.6)
(33.0-41.0)
(30.4-39.8)
37.6
36.7
(34.2-41.0)
(34.3-43.1)
(33.1-40.3)
35.9
(33.3-39.3)
(31.6-40.2)
Idaho
27.7
(23.6-31.8)
(24.1-33.5)
(21.1-32.1)
24.2
(20.2-28.0)
(20.8-27.6)
(18.7-29.3)
28.7
(26.1-31.3)
(23.9-30.5)
(26.3-33.1)
Indiana
24.6
21.6
27.4
(21.1-28.1)
(18.0-25.2)
(22.4-32.4)
28.3
(25.9-30.7)
(23.1-31.1)
(25.8-33.0)
Iowa
30.6
(26.1-35.1)
(26.9-37.1)
(23.4-35.4)
40.4
42.0
(37.7-43.1)
(38.7-45.3)
Kansas
(25.9-32.5)
(24.2-31.2)
(25.1-35.5)
Kentucky
22.0
20.6
23.4
(20.3-23.7)
(18.8-22.4)
(20.8-26.0)
25.5
23.7
27.0
(23.2-27.8)
(20.2-27.2)
(23.5-30.5)
(31.4-40.4)
(26.4-34.0)
(35.4-47.6)
Louisiana
45.7
46.6
(43.0-48.4)
(41.1-47.9)
(43.9-49.3)
Maine
25.2
(21.6-28.8)
(20.4-28.0)
(21.1-31.7)
22.9
25.1
(20.5-27.9)
(18.8-27.0)
(20.3-29.9)
27.3
(24.3-30.5)
(22.6-32.0)
(24.7-30.1)
32.1
35.5
(31.3-36.7)
(28.8-35.4)
(33.1-37.9)
34.2
(30.5-37.9)
(28.7-37.3)
(30.6-40.4)
Maryland
25.3
(21.1-28.9)
(20.2-29.2)
(20.6-30.0)
Massachusetts
26.8
(25.6-28.8)
(25.0-28.6)
(24.9-30.1)
(25.0-31.0)
(24.0-30.2)
30.5
32.3
(28.6-32.4)
(26.4-31.0)
(29.7-34.9)
33.4
(30.9-35.9)
(28.9-34.5)
(32.0-38.0)
35.4
35.8
(33.5-37.3)
(32.2-37.8)
(33.7-37.9)
39.6
(34.4-38.8)
(30.5-36.3)
(37.1-42.1)
31.6
33.3
(30.0-35.0)
(28.5-34.7)
(30.4-36.2)
Michigan
24.9
(22.1-27.7)
(22.6-28.0)
(20.8-28.0)
29.3
(27.4-31.8)
(26.7-31.9)
(27.1-32.5)
32.6
(28.6-35.6)
(28.4-36.8)
(28.0-34.4)
33.6
30.8
(30.9-36.3)
(27.6-34.0)
(32.7-39.9)
37.1
(33.3-40.9)
(32.1-41.3)
(33.3-41.5)
Mississippi
30.0
(28.2-33.6)
(26.4-33.6)
(28.9-35.1)
(31.8-38.2)
(28.2-37.8)
(33.2-41.0)
41.3
(36.2-43.4)
(34.0-42.2)
(36.6-46.0)
38.5
44.2
(37.8-44.8)
(32.9-44.1)
(40.9-47.5)
44.6
47.7
(40.0-49.2)
(35.4-47.4)
(42.8-52.6)
42.6
39.1
46.4
(38.9-46.3)
(34.9-43.3)
(41.1-51.7)
Missouri
(22.1-27.9)
(20.8-29.6)
(22.0-27.2)
(28.2-35.2)
(27.8-38.2)
(27.0-33.6)
34.8
(29.2-36.0)
(25.3-35.3)
(31.9-37.7)
(31.8-38.4)
(28.8-37.4)
39.2
(36.9-43.7)
(34.9-43.5)
45.2
43.3
47.0
(42.6-47.8)
(40.0-46.6)
(44.4-49.6)
Montana
33.9
(31.9-36.9)
(31.2-37.8)
(30.6-37.2)
36.4
(34.0-39.8)
(32.8-40.0)
(33.6-40.4)
(36.5-42.1)
(35.3-42.7)
(35.3-43.7)
43.1
42.9
43.2
(40.5-45.7)
(39.8-46.0)
(39.9-46.5)
47.1
(43.8-49.4)
(43.4-49.0)
(43.3-50.9)
48.1
46.8
49.2
(44.6-51.6)
(43.2-50.4)
(44.8-53.6)
45.9
47.2
(42.3-49.5)
(43.3-51.1)
(40.4-48.8)
Nebraska
35.6
(33.4-37.8)
(32.2-37.0)
(33.2-40.0)
(36.2-40.8)
(36.4-43.4)
(34.0-40.0)
Nevada
25.8
(23.6-29.2)
(22.6-29.0)
(22.6-31.0)
(24.1-29.1)
(24.6-31.4)
(22.1-28.5)
28.6
(27.1-32.7)
(25.2-32.0)
(26.7-35.3)
35.2
(32.3-38.1)
(29.3-37.3)
(33.5-39.9)
(30.1-36.7)
(30.6-39.0)
(27.5-36.9)
36.8
(33.8-39.8)
(35.3-41.9)
(30.6-39.8)
(31.8-38.6)
(30.5-38.5)
(31.6-40.0)
New Hampshire
21.3
22.1
(19.3-23.9)
(18.1-24.5)
(18.4-25.8)
(21.5-27.9)
(20.8-27.2)
(20.5-30.1)
27.9
(28.9-34.1)
(24.9-30.9)
(31.1-39.1)
(28.9-32.7)
(26.6-32.2)
(29.9-34.5)
New Jersey
(23.6-31.4)
(22.2-32.2)
(23.3-32.1)
New Mexico
(27.5-35.5)
(28.4-36.0)
New York
20.2
19.1
(18.1-22.3)
(16.8-21.4)
21.1
20.4
21.7
(19.6-22.6)
(18.5-22.3)
(19.5-23.9)
25.6
(23.3-28.1)
(23.1-28.1)
26.0
(26.7-30.9)
(23.4-28.6)
(27.8-35.2)
North Carolina
(20.7-26.3)
(22.6-31.2)
22.7
(20.9-26.1)
(18.9-26.5)
(21.5-26.7)
23.9
21.5
(21.7-26.1)
(18.8-24.2)
(22.9-29.9)
(30.5-36.1)
(31.5-39.3)
North Dakota
(33.4-41.4)
(33.9-44.5)
(30.8-40.4)
42.8
(39.3-46.3)
(41.2-50.2)
(35.4-44.8)
43.5
43.6
(40.4-46.6)
(39.0-47.2)
(39.8-47.4)
48.0
46.7
49.3
(44.1-51.9)
(41.8-51.6)
(44.8-53.8)
Ohio
20.3
22.2
(17.9-24.7)
(16.8-23.8)
(17.6-26.8)
23.2
22.6
(20.3-26.1)
(19.1-26.1)
(18.9-28.5)
(29.0-34.8)
(27.5-33.9)
(29.5-36.5)
35.7
(31.9-37.5)
(29.8-37.4)
(32.6-38.8)
(33.2-40.4)
(32.9-40.7)
(32.2-41.2)
Oklahoma
(23.4-28.2)
(22.8-30.0)
(22.1-28.1)
32.7
(26.2-35.0)
(21.5-35.1)
(29.1-36.3)
Rhode Island
26.2
(26.2-31.4)
(23.6-28.8)
(28.3-34.3)
28.2
25.9
(26.0-30.4)
(26.1-33.9)
(22.6-29.2)
29.5
(28.1-36.5)
(23.2-35.8)
(30.3-39.1)
(32.7-39.1)
(30.0-38.0)
(32.9-42.3)
South Carolina
(27.1-32.9)
(25.0-32.2)
(27.7-35.1)
(32.6-36.6)
(29.1-33.7)
(35.2-40.4)
41.0
(35.9-39.9)
(38.6-43.4)
(38.0-41.0)
(34.1-39.3)
(39.9-44.1)
40.7
(35.9-40.1)
(38.9-42.5)
40.8
(37.5-41.1)
(35.5-39.7)
(38.7-42.9)
South Dakota
(27.7-36.3)
(27.8-35.6)
(26.7-37.5)
(31.4-41.2)
(31.2-43.6)
(30.8-39.8)
(34.1-42.1)
(33.2-42.0)
(33.8-43.6)
44.0
43.8
(39.9-48.1)
(39.0-49.4)
(38.8-48.8)
49.7
50.2
(43.5-55.9)
(44.0-54.4)
(42.7-57.7)
49.5
50.9
(42.0-57.0)
(39.3-56.9)
(42.3-59.5)
51.5
51.4
51.6
(47.5-55.5)
(46.0-56.8)
(46.6-56.6)
49.9
53.6
46.3
(42.9-56.9)
(45.7-61.5)
(39.7-52.9)
Tennessee
25.4
(22.0-28.2)
(21.2-28.6)
(20.6-30.2)
(23.6-29.6)
(21.2-30.6)
Texas
38.9
(35.1-42.7)
32.8
(28.4-37.4)
(28.7-36.9)
(36.5-42.9)
(36.0-43.8)
(36.6-42.6)
Utah
13.4
13.3
(10.5-16.3)
(9.5-17.1)
(10.4-16.4)
17.9
18.6
17.0
(15.8-20.0)
(14.5-22.7)
(13.6-20.4)
17.1
12.1
(14.3-19.9)
(8.8-15.4)
(17.6-25.6)
19.7
19.5
19.9
(16.6-22.8)
(15.6-23.4)
(15.8-24.0)
19.4
19.3
(17.4-21.4)
(16.0-22.6)
(16.3-22.3)
21.4
(18.7-24.1)
(18.1-26.3)
(18.0-23.2)
23.6
(22.2-26.2)
(22.3-27.1)
(21.5-25.7)
24.3
(21.4-28.2)
(20.6-28.0)
(21.5-29.1)
Vermont
(19.7-26.1)
(19.1-25.3)
(20.0-27.0)
22.4
20.9
(20.3-24.5)
(18.9-22.9)
(21.1-26.3)
24.5
(21.6-27.4)
(20.0-26.4)
(22.4-28.6)
(23.2-29.2)
(22.0-26.6)
(24.0-31.8)
(29.2-36.2)
(27.8-35.0)
(30.0-37.6)
(34.2-42.4)
(31.0-40.0)
(36.8-44.8)
West Virginia
28.4
(22.1-27.5)
(17.3-24.5)
(24.9-31.9)
(21.4-27.2)
(19.9-27.9)
(21.0-28.4)
(27.4-35.2)
(26.1-33.5)
(27.5-37.5)
42.5
(31.3-38.7)
(24.6-31.2)
(37.6-47.4)
(33.4-39.2)
(35.8-45.0)
(36.2-41.2)
(33.7-38.5)
Wisconsin
(28.4-34.0)
(28.4-36.4)
(27.5-32.7)
28.1
(26.7-32.7)
(27.3-35.3)
(23.9-32.3)
37.3
(33.7-40.9)
(31.8-38.8)
(34.5-41.1)
(30.2-38.4)
(36.5-45.9)
36.0
36.5
(32.6-39.4)
(31.1-40.1)
(32.6-40.4)
(36.5-40.9)
(36.0-42.0)
(35.7-41.3)
Wyoming
(28.2-34.4)
(25.3-31.3)
(28.7-35.7)
(29.1-38.7)
(26.3-35.1)
(33.8-38.0)
(32.5-37.7)
(35.7-41.7)
(33.6-41.2)
(36.3-43.5)
40.9
42.2
(38.2-43.6)
(38.3-46.1)
42.3
40.6
(39.2-45.4)
(37.1-44.1)
(40.0-48.0)
City
Baltimore
20.8
(21.7-25.5)
(18.5-23.1)
Boston
20.7
17.4
(17.9-23.5)
(14.2-20.6)
(21.3-26.1)
(17.3-23.5)
(22.9-30.9)
(22.9-27.5)
(22.4-29.2)
(21.2-28.0)
(25.1-30.7)
(19.5-27.9)
(28.1-35.5)
(26.4-31.6)
(22.4-29.6)
(28.4-35.6)
(26.9-31.7)
(23.9-30.3)
(27.7-35.3)
(28.8-33.4)
(24.5-31.5)
Broward County, FL
22.5
(20.8-26.6)
(19.4-25.6)
(20.7-28.9)
(22.1-27.3)
(21.7-29.3)
(20.7-27.1)
Charlotte-Mecklenburg, NC
(23.0-27.4)
(21.0-27.6)
(23.1-28.7)
Chicago
(28.4-35.4)
(24.5-33.3)
(29.7-40.7)
(25.7-37.9)
(26.7-39.5)
(29.9-38.1)
(31.4-40.2)
(26.2-37.4)
(29.7-36.5)
(24.2-33.8)
(32.2-42.0)
34.1
(31.8-36.4)
(27.3-34.1)
(34.0-42.4)
(32.4-38.0)
(29.8-36.0)
(32.5-38.9)
(33.3-42.5)
(34.6-40.2)
(32.6-39.2)
(34.1-43.1)
Dallas
41.7
42.1
(38.6-45.2)
(37.4-46.0)
(37.9-46.3)
(37.5-43.7)
(35.1-43.3)
(38.3-46.3)
(37.2-42.0)
(36.4-42.6)
(35.9-43.3)
(36.7-41.5)
(32.9-38.9)
(38.2-45.8)
44.3
(40.2-46.0)
(38.3-45.7)
(40.0-48.6)
(44.3-48.3)
(40.3-46.1)
(46.5-52.5)
43.0
48.9
(43.9-47.5)
(40.6-45.4)
(46.4-51.4)
44.8
(43.2-46.4)
(40.6-44.6)
(44.6-49.6)
DeKalb County, GA
18.5
(18.0-21.8)
(16.5-20.5)
(18.1-24.1)
23.3
(22.4-26.4)
(20.3-26.3)
Detroit
(27.8-33.0)
(25.1-32.3)
(29.3-35.9)
(30.6-36.8)
(31.0-39.0)
(28.9-35.9)
37.2
(34.6-39.8)
(34.7-41.3)
(32.1-40.5)
45.1
(38.2-43.0)
(33.4-40.2)
(42.2-48.0)
Hillsborough County, FL
(27.3-32.7)
(25.8-31.8)
(26.9-34.1)
Ft. Lauderdale
27.6
(25.2-29.8)
(24.1-31.1)
(23.4-31.2)
(25.8-30.8)
(25.2-31.4)
(25.4-31.4)
(27.6-33.8)
(26.3-34.1)
(27.2-35.4)
(27.4-32.4)
(27.2-33.2)
(25.9-33.1)
(28.0-34.0)
(26.2-33.6)
(27.9-36.1)
(28.3-35.3)
(27.6-35.2)
(27.0-37.2)
Houston
39.4
(35.9-41.3)
(35.3-43.5)
(34.1-41.1)
(34.7-39.7)
(31.8-39.2)
(35.1-42.1)
44.9
(35.9-43.5)
(30.7-39.5)
(39.4-50.4)
(39.8-47.8)
(36.5-46.1)
(39.0-52.4)
Los Angeles
(26.1-35.7)
(29.1-39.7)
(21.3-33.7)
(28.1-34.7)
(26.8-34.0)
(25.6-39.4)
(26.3-32.5)
(26.9-32.3)
(22.6-34.8)
Memphis
(23.8-29.0)
(24.6-31.8)
(21.0-26.0)
Miami
(25.7-30.9)
(23.0-29.0)
(23.2-27.6)
(22.8-28.6)
(21.3-28.5)
(24.6-28.8)
(22.3-28.1)
(25.2-31.6)
(26.5-32.5)
(24.6-31.6)
(27.4-34.2)
(28.7-35.5)
(27.2-34.4)
(29.2-37.6)
33.5
(27.3-32.9)
(23.3-29.9)
(29.3-37.7)
(27.8-32.4)
(25.9-32.3)
(29.0-32.8)
(26.7-31.5)
(26.1-31.9)
Milwaukee
(26.8-32.4)
(26.2-34.2)
(25.3-32.9)
(27.4-33.8)
(26.2-33.8)
(26.3-35.9)
New Orleans
(27.3-34.3)
(28.2-36.8)
(28.0-34.6)
(27.7-35.7)
(30.5-38.7)
(28.0-37.4)
(32.0-41.8)
40.5
(34.8-40.8)
(36.3-44.7)
(36.6-42.0)
(38.0-46.0)
New York City
17.8
16.8
18.9
(15.8-19.8)
(14.5-19.1)
(16.1-21.7)
(17.1-20.1)
(15.2-18.8)
(18.4-22.0)
21.0
(18.7-22.7)
(18.0-22.6)
(17.3-24.7)
20.5
(20.2-25.8)
(18.6-22.4)
23.8
(21.2-24.2)
(17.9-25.3)
(19.7-27.9)
Orange County, FL
(24.6-30.4)
(24.7-32.3)
(21.9-30.3)
(23.0-27.0)
(25.5-29.3)
Palm Beach
(22.8-27.6)
(21.7-28.1)
(21.6-29.4)
(26.2-31.8)
(24.4-31.8)
(26.3-33.5)
(31.3-37.7)
(29.9-36.3)
(30.1-41.9)
(35.5-41.5)
(30.0-36.6)
(38.9-47.7)
Philadelphia
(17.8-25.6)
(21.6-29.0)
21.8
(20.6-26.0)
(20.7-29.1)
(17.5-26.1)
(23.5-30.9)
(22.7-32.1)
(22.1-31.5)
26.3
(25.6-30.6)
(23.6-29.0)
(26.2-33.4)
(26.6-32.6)
(23.8-30.6)
(25.5-33.7)
(31.6-38.8)
San Bernardino
(27.2-32.4)
(25.2-32.2)
(26.1-34.1)
(25.7-31.5)
(26.8-33.8)
(22.5-31.1)
(31.2-38.4)
(28.9-37.9)
(30.1-41.7)
San Diego
(25.1-29.9)
(23.3-31.5)
(26.5-31.7)
(26.5-32.3)
(24.9-32.9)
(25.3-30.7)
(24.0-30.8)
(24.5-32.7)
(24.8-30.4)
(24.8-31.8)
(23.3-30.7)
(31.4-36.2)
(29.6-35.4)
(31.7-38.3)
(30.2-35.2)
(29.4-35.8)
(29.1-36.1)
(30.6-36.0)
(29.5-35.7)
(30.3-37.9)
(25.8-35.2)
(23.2-36.6)
(24.4-37.6)
San Francisco
21.2
(19.1-22.5)
(18.7-23.7)
(18.3-22.9)
20.1
(16.7-21.9)
(16.7-23.5)
(14.8-22.4)
(18.6-22.8)
(17.2-23.0)
(18.1-24.3)
Seattle
Sources: Centers for Disease Control and Prevention. Youth online at http://apps.nccd.cdc.gov/yrbss/, Youth Risk Behavior Survey, CD-ROM, Youth '99 and Youth Risk Behavior Survey, CD-ROM Youth '97. The YRBS is an in-school survey of students in grades 9 through 12. Unweighted data are excluded from these tables.
- Missing bar indicates less than 100 respondents for the category. If all categories in a year have a missing bar, either the geographic area did not use the survey item or participate in the YRBS that year, the data were not weighted, or the survey excluded students from one of the large school districts.
CI indicates 95-percent confidence interval.