18
D ata Sources
A. Surveys
Behavioral Risk F
actor Surveillance System
The Behavioral Risk Factor Surveillance System
(BRFSS) is an ongoing random-digit dialed telephone
survey of adults concerning health-related behaviors.
The BRFSS was developed by the Centers for Disease
Control and Prevention (CDC) and is conducted in all
states in the U.S. Each year, between 3,000 and 7,000
adult Oregonians are interviewed. The BRFSS includes
questions on health behavior risk factors such as seat
belt use, diet, weight control, tobacco and alcohol use,
physical exercise, preventive health screenings, and use
of preventive and other healthcare services. The data are
weighted to represent all adults aged 18 years and older.
A core set of questions, which includes the question of
smoking prevalence, is asked annually and other topics
are surveyed on a rotating basis of two years. Each state
may add questions to the CDC survey, and Oregon asks
an additional sixty questions on attitudes and behaviors
regarding tobacco. Except as noted below, 2003 BRFSS
data are used in this report.
Data presented by race/ethnicity are from a special com-
bined 2000 & 2001 file which includes additional sur-
veys from an oversample among African Americans,
American Indians, and Asian/Pacific Islanders. The
oversampling ensured that there would be a minimum
of 100 surveys in each county and a minimum of 250
surveys for each racial/ethnic group. Data for each
region and each racial/ethnic group were weighted to
represent the group’s population by age and gender.
O
regon Healthy Teens Survey
Since 2000, the Youth Risk Behavior Survey and the
Oregon Public School Drug Use Survey have been com-
bined into a single annual survey, Oregon Healthy
Teens. In 2004, approximately 13,503 8th graders from
119 middle schools and 9,247 11th graders from 99
high schools were surveyed.
Y
outh Risk Behavior Survey
The YRBS was developed by the Centers for Disease
Control and Prevention and was administered in a sam-
ple of Oregon schools every other year from 1991-2000.
The sample size varied between 1,600 and 32,000 and
the final data were weighted to more accurately repre-
sent the Oregon high school population. The question-
naire assessed behavioral risks among Oregon high
school students (grades 9 through 12) in the areas of
vehicle safety, weapon carrying and violence, tobacco
use, alcohol use, other drug use, sexual activity and
pregnancy, HIV knowledge and attitudes, eating behav-
iors, nutrition, exercise, and access to healthcare includ-
ing use of school-based health centers. A sample of
middle school students (grades 6 through 8) was added
in 1997. In 2000, over 7000 students participated in
the survey.
O
regon Public School Drug Use Survey
The Oregon Office of Mental Health and Addiction
Services (OMHAS) administered this anonymous sur-
vey every other year from 1986-2000 through the
Oregon public school system. It was patterned after the
ongoing national surveys of the National Institute on
Drug Abuse and included eighth and eleventh graders
since 1986; a sixth grade sample was added in 1994.
Schools were randomly sampled using a cluster sample
design and in 2000 included over 15,000 students.
The questionnaire assessed community characteristics,
tobacco use, drug use, alcohol use, drug/alcohol use
in student’s peer and family network, refusal skills,
susceptibility to future use, and attitudes toward school
and family.
B. Vital Statistics Data
Birth Certificate Statistical File
Data from the Birth Certificate Statistical File are coded
from birth certificates collected by the State Registrar
and represent all births occurring in Oregon and all