Search PubMed⌕ Search

Biomedical subjects

R R Briefel

Publications and source records attributed to R R Briefel.

26 records · Page 2Linked to original sources
PubMed1993

The National Health and Nutrition Examination Survey III: describing the health and nutritional status of older Americans.

The National Health and Nutrition Examination III will provide important data for examination of the health and nutritional status of persons in the U.S. Innovations in the study, particularly the inclusion of persons over age 74 and the focus of the survey on the major chronic diseases of old age, will enhance the value for older persons. Response rates for phase 1 (1988-1991) show that about 80% of all older subjects agreed to the interview; examination rates declined with age, but the use of a home examination increased the response rate for those aged 75 or older by about 9% to 67% for men and about 62% for women. Analytic plans include examination of the effect of nutrition on health, as well as the effect of health status on the distribution of nutritional risk factors in old age.

Adult↗
PubMed1989

NHANES III for older persons: nutrition content and methodological considerations.

The National Health and Nutrition Examination Surveys (NHANES) are important in the assessment of nutritional status of the population of the United States. The utility of these surveys for assessment of the nutritional status of older Americans has been limited because prior NHANES have not included persons aged greater than or equal to 75 y. This paper reviews the role of the NHANES for nutritional epidemiology, highlighting the unique opportunity NHANES III offers to expand the nutrition database for older persons. Data are presented on consequences of nonresponse in analytic work and mechanisms that have been devised to approach the potential problem of nonresponse within NHANES III.

Aged↗
PubMed1988

Federal monitoring of the nation's nutritional status. Contributions of the National Center for Health Statistics.

The National Center for Health Statistics conducts a broad program of record-based systems and population surveys providing information on the health and nutritional status of the US population. The record-based systems include vital statistics and health-care surveys. Population surveys include the National Health and Nutrition Examination Survey (NHANES), the National Health Interview Survey, the National Survey of Family Growth, and epidemiologic follow-back surveys. Although all of these data systems provide nutrition-related information, the NHANES collects the most directly relevant nutritional status data through interview and examination of a national probability sample of children and adults. The third NHANES is scheduled to begin in September 1988 and is designed to provide cross-sectional estimates of dietary intake and nutritional status for nutrition-monitoring purposes and to serve as the baseline for longitudinal studies of diet and health.

Anthropometry↗
PubMedDate not supplied

Distributions and trends of serum lipid levels among United States children and adolescents ages 4-19 years: data from the Third National Health and Nutrition Examination Survey.

BACKGROUND: Atherosclerosis begins in childhood and progresses into adulthood. The reduction of cardiovascular risk factors, such as elevated serum total cholesterol and low-density lipoprotein cholesterol (LDL-C) levels, in childhood may reduce cardiovascular morbidity and mortality in adulthood. Lipid distributions among children and adolescents were examined using the most recent nationally representative data. METHODS: Data from 7,499 examinees in NHANES III (1988-1994) were used to estimate mean and percentile distributions of serum total cholesterol, LDL-C, high-density lipoprotein cholesterol (HDL-C), and triglycerides in children and adolescents aged 4 to 19 years. The estimates were analyzed by age, sex, and race/ethnic groups. Trends in mean total cholesterol were examined for 12- to 17-year-olds using data from NHES III (1966-1970), NHANES I (1971-1974), and NHANES III (1988-1994). RESULTS: For children and adolescents 4 to 19 years of age, the 95th percentile for serum total cholesterol was 216 mg/dL and the 75th percentile was 181 mg/dL. Mean age-specific total cholesterol levels peaked at 171 mg/dL at 9-11 years of age and fell thereafter. Females had significantly higher mean total cholesterol and LDL-C levels than did males (P < 0.005). Non-Hispanic black children and adolescents had significantly higher mean total cholesterol, LDL-C, and HDL-C levels compared to non-Hispanic white and Mexican American children and adolescents. The mean total cholesterol level among 12- to 17-year-olds decreased by 7 mg/dL from 1966-1970 to 1988-1994 and is consistent with, but less than, observed trends in adults. Black females have experienced the smallest decline between surveys. CONCLUSIONS: The findings provide a picture of the lipid distribution among U.S. children and adolescents and indicate that, like adults, adolescents have experienced a fall in total cholesterol levels. Total cholesterol levels in U.S. adolescents declined from the late 1960s to the early 1990s by an average of 7 mg/dL. This information is useful for planning programs targeting the prevention of cardiovascular disease beginning with the development of healthy lifestyles in childhood.

Adolescent↗