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This report presents national anthropometric reference data based on health examination survey results from the National Health and Nutrition Examination Survey (NHANES), 1999-2002, for all ages of the U.S. population. Weighted population means, standard errors of the means, and selected percentiles are presented for the total U.S. population by sex, race or ethnic group, and age in years or age group. Findings for some population groups are reported in a way that is comparable with results reported from National Health Examination Surveys (NHES) and NHANES conducted between 1960 and 1994. These data add to the knowledge about trends in child growth and development and are used to monitor prevalent conditions in the U.S. population such as overweight and obesity.

Objective: This report presents selected prevalence estimates for children ages 4-17 years with difficulties in emotions, concentration, behavior, or being able to get along with others using data from the 2001, 2002, and 2003 National Health Interview Surveys (NHIS).

Methods: Data for the U.S. civilian noninstitutionalized population were collected using computer-assisted personal interviews (CAPI). In 2001, a total of 10,367 interviews were completed about sample children ages 4-17 years by the member of the household most knowledgeable about the child's health. The number of completed interviews about sample children ages 4-17 years was 9,512 in 2002 and 9,399 in 2003. Questions on children's emotional and behavioral difficulties from the Strengths and Difficulties Questionnaire (SDQ) were first asked in the NHIS in 2001. SUDAAN software was used to tabulate statistics shown in this report.

Results: In 2001, 2002, and 2003, approximately 5% of U.S. children ages 4-17 years had emotional or behavioral difficulties, and for approximately 80% of these children, there was an impact on their functioning. Children with difficulties in emotions, concentration, behavior, or being able to get along with others varied by sex, age, race, family structure, poverty status, and health insurance status. About 50% of these children were upset or distressed by their emotional or behavioral difficulties, and about 80% had difficulties that impacted their family life, friendships, learning, or leisure activities.

Objective: This report describes changes in the use of voluntary workers in nursing homes between 1985 and 1999. Statistics are presented on selected characteristics of nursing homes using voluntary workers and the services they perform. Factors that may contribute to the increased use of voluntary workers are also discussed.

Methods: The data presented in this report were collected from the 1985 and 1999 National Nursing Home Surveys (NNHS). NNHS is a part of the National Health Care Survey, which measures health care utilization across various types of providers. Conducted periodically since 1973, NNHS obtains information from a nationally representative sample of nursing home facilities based on interviews with administrators and staff. Sample data are weighted to produce annual national estimates.

Results: In 1999, 87 percent of all nursing homes reported using voluntary workers, up from 78 percent in 1985. In 1985, unpaid workers were most likely found in large nursing homes (100 beds or more). By 1999, about the same proportion of nursing homes, large and small, reported their use. In 1999, the Northeast region had the greatest proportion of nursing homes that used volunteers--93 percent. Chain-affiliated and independent facilities used volunteers with about the same frequency, and about the same percentage of nursing homes not certified by either Medicaid or Medicare used voluntary workers as did dually-certified facilities. However, in 1999, proportionately fewer proprietary (for-profit) nursing homes reported having volunteers (85 percent) than did nonproprietary facilities (93 percent).

Objective: To provide seroprevalence estimates for six selected infectious agents by various sociodemographic and risk behavior variables stratified by race/ethnicity for adults age 20 years or more.

Methods: Seroprevalence estimates for hepatitis A, B, and C, Toxoplasma gondii, Helicobacter pylori, and Herpes simplex-2 were calculated from data in the third National Health and Nutrition Examination Survey, 1988-94 utilizing weights to account for differential oversampling by race/ethnicity and nonresponse to the interview and examination. Standard errors and 95% confidence intervals were calculated taking into account the complex sample design.

Results: Age-adjusted prevalence estimates and 95% confidence intervals are presented for three enteric infectious diseases hepatitis A, Toxoplasma gondii, Helicobacter pylori, as well as three blood-borne/sexually transmitted diseases, hepatitis B, hepatitis C, and Herpes simplex-2 stratified by race/ethnicity and by various demographic factors including gender, poverty index, population size of area of residence, country of birth, household crowding, and years of education. In addition, estimates are presented for the three blood-borne/sexually transmitted diseases by various risk behaviors that include marital status, age at first sexual intercourse, number of lifetime sexual partners, cocaine use, and marijuana use.

Objectives: This report presents information on the use of electronic clinical systems to support patient care in physician offices and hospital emergency and outpatient settings. Percentages of hospital emergency and outpatient departments with electronic patient medical records and automated drug dispensing systems are presented by selected hospital characteristics for 2001-02. Percentages of physicians using electronic patient billing records, electronic patient medical records, and computerized prescription order entry systems are presented by selected physician characteristics for 2003.

Methods: Data are from provider induction interviews from the National Ambulatory Medical Care Survey (NAMCS) and the National Hospital Ambulatory Medical Care Survey (NHAMCS), the ambulatory care component of the National Health Care Survey (NHCS). The NHCS is a family of provider-based surveys that collect information on the care provided in various medical care settings.

Results: During 2001-03, electronic medical records were used less often in physician offices (17 percent) than in hospital emergency (31 percent) and outpatient departments (29 percent). In physician offices, information technology was more frequently used for billing patients (73 percent) than for maintaining medical records electronically (17 percent) or ordering prescriptions electronically (8 percent). Automated drug dispensing systems were available in hospital emergency departments (40 percent) more frequently than in outpatient departments (18 percent).

Objective: This report presents prevalence estimates by marital status for selected health status and limitations, health conditions, and health risk behaviors among U.S. adults, using data from the 1999-2002 National Health Interview Surveys (NHIS).

Methods: Data for the U.S. civilian noninstitutionalized population were collected using computer-assisted personal interviews (CAPI). The household response rate for the NHIS was 88.7%. This report is based on a total of 127,545 interviews with sample adults aged 18 years and over, representing an overall response rate of 72.4% for the 4 years combined. Statistics were age-adjusted to the 2000 U.S. standard population. Marital status categories shown in this report are: married, widowed, divorced or separated, never married, and living with a partner.

Results: Regardless of population subgroup (age, sex, race, Hispanic origin, education, income, or nativity) or health indictor (fair or poor health, limitations in activities, low back pain, headaches, serious psychological distress, smoking, or leisure-time physical inactivity), married adults were generally found to be healthier than adults in other marital status categories. Marital status differences in health were found in each of the three age groups studied (18-44 years, 45-64 years, and 65 years and over), but were most striking among adults aged 18-44 years. The one negative health indicator for which married adults had a higher prevalence was overweight or obesity. Married adults, particularly men, had high rates of overweight or obesity relative to adults in other marital status groups across most population subgroups studied. Never married adults were among the least likely to be overweight or obese.