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The Early Release Program of the National Health Interview Survey

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  1. The Early Release Program of the National Health Interview Survey NCHS Data Users Conference July 10, 2006, Washington, D.C. Jeannine Schiller, M.P.H., Jane F. Gentleman, Ph.D., Eve Powell-Griner, Ph.D. National Center for Health Statistics Centers for Disease Control and Prevention

  2. NHIS overview • In-person household interview survey of civilian noninstitutionalized U.S. population • Approx. 40,000 households, 100,000 persons, 37,000 sample adults, 15,000 sample children • Complex sample design • Over-samples blacks, Hispanics, Asians, elderly minorities • Demographics, socioeconomic status, limitations, health care utilization, chronic conditions, health behaviors, supplements, etc.

  3. 2 reports: main and detailed health insurance Releases updated ESTIMATES every 3 months Releases occur 6 months after the end of each quarter of data collection (March, June, September, December) Internet only release First release: April 2001 NHIS Early Release (ER) Program

  4. Objectives Provide ready and timely access to the most recent NHIS key estimates Monitor health and health care Measure progress toward national public health objectives NHIS ER Program

  5. Current smoking Alcohol consumption HIV testing General health status Personal care needs Serious psychological distress Diabetes Asthma Main report Indicators • Health insurance coverage • Usual place to go for medical care • Obtaining needed medical care • Influenza vaccination • Pneumococcal vaccination • Obesity • Leisure-time physical activity

  6. Main report Format • Graph of trend since 1997 • Graph of current estimates by age group and gender • Graph of current estimates by race/ethnicity • Data tables for all graphs • Extra graph and/or tables as needed • Text highlights

  7. Detailed health insurance report • 3 measures of uninsurance • Additional estimates of public health plan and private health insurance coverage • Uninsurance presented by additional sociodemographic measures • Annual state-level estimates for large states

  8. Example #1:Influenza vaccination Questions: • “During the past 12 months, have you had a flu shot?” • “During the past 12 months, have you had a flu vaccine sprayed in your nose by a doctor or other health professional?”

  9. Figure 4.1. Percentage of adults aged 18 years and over who had received an influenza vaccination during the past 12 months, by age group and quarter: United States, 1997–2005

  10. Table 4.1. Annual percentage of adults aged 50 years and over who had received an influenza vaccination during the past 12 months, by age group and sex: United States, 1997–2005

  11. Figure 4.2. Percentage of persons who had received an influenza vaccination during the past 12 months, by age group and sex: United States, 2005

  12. Figure 4.3. Percentage of adults aged 65 years and over who had received an influenza vaccination during the past 12 months, by race/ethnicity: United States, 2005

  13. Data table for figure 4.1. Percent of adults aged 18 years and over who received influenza vaccine during the past 12 months, by age group and quarter: United States, 1997–2005

  14. Data table for figure 4.2. Percent of adults aged 18 years and over who received influenza vaccine during the past 12 months, by age group and sex: United States, 2005

  15. Data table for figure 4.3. Percent of adults aged 65 years and over who received influenza vaccine during the past 12 months, by race/ethnicity: United States, 2005

  16. Example #2:Current smoking Questions: • “Have you smoked at least 100 cigarettes in your entire life?” • “Do you now smoke cigarettes every day, some days or not at all?”

  17. Figure 8.1. Prevalence of current smoking among adults aged 18 years and over: United States, 1997–2005

  18. Figure 8.2. Percent distribution of smoking status among adults aged 18 years and over, by sex: United States, January–March 2005

  19. Figure 8.3. Prevalence of current smoking among adults aged 18 years and over, by age group and sex: United States, January–March 2005

  20. Figure 8.4. Age-sex-adjusted prevalence of current smoking among adults aged 18 years and over, by race/ethnicity: United States, January–March 2005

  21. NHIS ER processing • Expedited microdata editing • standard edits • preliminary weights • Data analysis • crude and adjusted estimates with estimates of variance • checking and verification • automated updating of figures and tables

  22. NHIS ER processing, cont. • Interpretation • significance testing • contrasts • trend analysis • updating of text highlights • Report dissemination • efficient editorial review and Internet release • press releases/media alerts

  23. Where to find the ER NCHS Web site: http://www.cdc.gov/nchs Information Showcase NHIS Web site: http://www.cdc.gov/nchs/nhis.htm What’s New listserv