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- P M Guenther, P S Kott, A L Carriquiry
- The Journal of nutrition
- 1997

Assessment of the dietary intake of a population must consider the large within-person variation in daily intakes. A 1986 report by the National Academy of Sciences (NAS), commissioned by the U.S. Department of Agriculture (USDA), marked an important milestone in the history of this issue. Since that time, USDA has been working cooperatively with… (More)

- S M Krebs-Smith, P S Kott, P M Guenther
- Journal of the American Dietetic Association
- 1989

Two different, but equally correct, answers can be given to a question such as "What proportion of the cholesterol that is consumed comes from eggs?" This is because the question can have two different meanings, depending on whether one is referring to the mean proportion of cholesterol from eggs or the population proportion. The mean proportion of… (More)

- Laurence S Freedman, Patricia M Guenther, Susan M Krebs-Smith, Phillip S Kott
- The Journal of nutrition
- 2008

The USDA Healthy Eating Index-2005 (HEI-2005) is a tool to quantify and evaluate the quality of diet consumed by the U.S. population. It comprises 12 components, expressed as ratios of a food group or nutrient to energy intake. The components are scored on a scale from 0 to M, where M is 5, 10, or 20. Ideally, the HEI-2005 is calculated on the basis of the… (More)

- Beth Han, Phillip S Kott, Art Hughes, Richard McKeon, Carlos Blanco, Wilson M Compton
- Journal of psychiatric research
- 2016

BACKGROUND
In 2012, over 1.3 million U.S. adults reported that they attempted suicide in the past year, and 39,426 adults died by suicide. This study estimated national suicide case fatality rates among adult suicide attempters (fatal and nonfatal cases) and examined how they varied by sociodemographic characteristics.
METHODS
We pooled data on deaths by… (More)

The quest to improve dietary intake assessment and to achieve more accurate estimates of average daily consumption is ongoing. The primary dietary assessment method used in the National Health and Nutrition Examination Survey, conducted by the United States Center for Disease Control and Prevention, is the 24-hour recall of dietary intake (Moshfegh et al.,… (More)

- Diana M. Stukel, Phillip S. Kott, E E wiYi
- 2002

In this paper, we consider a specific two-phase design: at the first phase, primary sampling units (PSUs) are drawn within each first phase stratum using Simple Random Sampling (SRS) with replacement (WR). Then, all units within the sampled PSUs are selected, resulting in a one-stage take-all cluster design. At the second phase, the entire first phase… (More)

The standard two-sided Wald coverage interval for a small proportion, P, may perversely include negative values. One way to correct this anomaly when analyzing data from a simple random sample is to compute an asymmetric Wilson (or score) coverage interval. This approach has proven not only theoretically satisfying but empirically effective. Some have… (More)

- Phillip S. Kott, Dan Liao
- 2012

Given a randomly drawn sample, calibration weighting can provide double protection against the selection bias resulting from unit nonresponse. This means that if either an assumed linear prediction model or an implied unit selection model holds, the resulting estimator will be asymptotically unbiased in some sense. The functional form of the selection model… (More)

- B A Wagner, S J Wells, P S Kott
- Preventive veterinary medicine
- 2001

Population attributable risk estimates offer a method of combining information on population exposure and disease risk factors into a single measure. Univariate and multivariable methods exist for calculating point estimates and variances under the assumption of equal sampling probabilities. National Animal Health Monitoring System national studies… (More)

- Phillip S. Kott
- 2002

This paper focuses on a design-consistent regression estimator in which the “auxiliaries” are estimated from a stratified cluster sample and the regression coefficients from an arbitrary subsample of the original sample. The reweighted expansion estimator described in Stukel and Kott (1997) is an example of such an estimator. Assuming that the target… (More)