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APPENDIX B: SEXUAL BEHAVIOR
Download the table on this page: Sex Knowledge and Behavior
Download: Appendix B
View additional tables from Appendix B

APPENDIX B: SYNOPSIS OF YRBS RESULTS, 1991 THRU 1999
[NOTE: YRBS results from 1991-1993 are not necessarily comparable with later years because of differences in sampling methods and editing.]

SEXUAL BEHAVIOR
1991 1993 1995 1997 1999
% % % % %
ATTITUDES AND INFORMATION ABOUT SEX
OREGON*
Would advise peer to wait to start having sexual intercourse na 61 63 69 73
Thinks 50%+ of classmates same age and gender have had sex na na 47 43 43
Ever been taught about HIV/AIDS infection in school 90 92 94 95 na
School is most important source of information regarding HIV/AIDS prevention 66 62 64 68 67
Knows where to get condoms na 63 80 78 73
U.S. DATA**
Ever been taught about HIV infection in school 83 86 86 92 91
SEXUAL ACTIVITY, PREGNANCY AND STD RISK BEHAVIORS
OREGON*
Ever had sexual intercourse 47 46 40 35 36
Had first sexual intercourse prior to age 13 8 10 6 5 4
Have had sexual intercourse with four or more people during lifetime 15 16 11 10 9
Ever been or ever gotten someone pregnant 5 6 4 4 4
Currently sexually active (had sexual intercourse in past 3 months) 31 31 25 23 25
Among those who have ever had sex:
Used alcohol or drugs before last sexual intercourse 27 20 25 28 26
Used a condom during last intercourse 55 56 58 58 59
Used birth control pills as main birth control; last intercourse 18 18 17 15 17
U.S. DATA**
Ever had sexual intercourse 54 53 53 48 50
Had first sexual intercourse prior to age 13 10 9 9 7 8
Have had sexual intercourse with four or more people during lifetime 19 19 18 16 16
Ever been or ever gotten someone pregnant 6 7 7 7 6
Currently sexually active (had sexual intercourse in past 3 months) 38 38 38 35 36
Among those who have ever had sex:
Used alcohol or drugs before last sexual intercourse 22 21 25 25 25
Used a condom during last intercourse 46 53 54 57 58
Used birth control pills as main birth control; last intercourse 21 18 17 17 16
* Oregon data is unweighted % for years 1991 and 1993 and weighted % for years 1995, 1997, and 1999
**CDC data is weighted for all years