Presentation on theme: "BRFSS Behavioral Risk Factor Surveillance System 2002 Forsyth County BRFSS Survey Results State Center for Health Statistics Division of Public Health."— Presentation transcript:
BRFSS Behavioral Risk Factor Surveillance System 2002 Forsyth County BRFSS Survey Results State Center for Health Statistics Division of Public Health North Carolina Department of Health and Human Services
History of the BRFSS Survey Developed by the Centers for Disease Control and Prevention (CDC) and state health departments in the early 1980s in response to the need for: 1. on-going assessment of adult health-risk behaviors and health practices; 2. provision of state and regional (and now county) estimates for targeting high-risk groups. It is the largest and longest running telephone health survey in the world.
BRFSS in the U.S., 1994 Guam Puerto Rico Virgin Islands
The 2002 North Carolina BRFSS The 2002 NC BRFSS Survey consists of 6,748 completed interviews in English and Spanish. County-level estimates were produced for: Buncombe, Forsyth, Guilford, Hend./Transyl., Mecklenburg, Orange, Pitt, Randolph, Roberson, and Wake. The remaining counties were stratified into three regions of the state: Western, Piedmont, and Eastern Region. First in the history of the NC BRFSS Program, the 2002 data provide estimates on the health of Native Americans, Hispanics speaking Spanish-only, and Asian Americans. These results may be viewed at the NC State Center for Health Statistics website: www.schs.state.nc.us/SCHS/healthstats /brfss/2002/highlights.html
Standard BRFSS Data Collection Methods Ongoing monthly telephone interviews using random digit dialing Computer-assisted telephone interviewing (CATI) Probability sampling of noninstitutionalized adults (18+ years) in households with telephones
Weighting the BRFSS Data BRFSS data are directly weighted for the probability of selection of a telephone number, the number of adults (18+ yrs.) in a household, and the number of phones in a household. Additional weights are developed for non- coverage, i.e. households with no telephones, and for differences between the sample characteristics and the state population characteristics. A final weight is assigned to each respondent so that the weighted proportion and weighted number of respondents by sex, age, and race matches the state population.
The BRFSS Questionnaire Standard Core Questions Required by CDC and asked every year by all participants. Rotating Core Questions Required by CDC and asked every other year by all participants. Emerging Core Questions Required by CDC and asked every one time by all participants. Optional Modules offered and supported by CDC Included if sponsored by state programs/agencies. State-Added Questions Developed and sponsored by state programs/agencies.
Survey Topics on the NC 2002 BRFSS Core Sections Health status Health care access Oral health Womens health Family planning Diabetes Immunization Tobacco/alcohol Firearms Demographics Prostate/colorectal HIV/AIDs Optional Modules Healthy days Tobacco indicators Weight control Physical activity Adult/child asthma Arthritis State-added Diabetes counseling Cancer prevalence Disability Routine checkup Sexual/physical assault Reaction to race
About this 2002 BRFSS Slide Presentation Objectives: (1) promote BRFSS data use and dissemination by North Carolina public health professionals; and (2) by mixing or selecting specific slides, presentations may be tailored or modified to suit the needs of the county/presenter. Talking points: slides include talking points to help with interpretation of the results. Survey questions: the BRFSS survey questions are quoted verbatim in the talking points. Nationwide data: for core topics, nationwide estimates (means) are provided for comparison. Calculations: only weighted data are presented and all unknowns/refusals are excluded from calculations.
About this 2002 BRFSS Presentation (cont.) Cautionary Notes: –These results need to be viewed as estimates and not the actual or true value of the outcome of interest. –With any estimate based on a random sample, there is a margin of error. For the 10 oversampled counties the margin of error is about 5% if the question was asked of all respondents. This means that we can expect the true value to lie somewhere between the sample estimate plus or minus 5 percent. –When county results are subset by age or race, for example, the margin of error increases as a function of the resulting smaller sample size. –Use caution when comparing the results across counties, as the margin of error may not be the same for all counties. –All results are presented on a 100 point scale.
Contents of Presentation Sample Size & Demographics Health Status/Healthy Days Health Care Access Chronic Diseases Cancer Screening Immunization Oral Health Tobacco Use and Prevention Risk Factors HIV/AIDS Womens Health Family Planning Physical Activity Weight Control Firearms Reaction to Race 2002 BRFSS Tracked HP2010 Objectives Note: all results are based on weighted data