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Biometry (Latest Articles)
Latest indexed articles for 'Biometry'
Articles 31 to 40 of 200:
The sign of the unmeasured confounding bias under various standard populations.
30 Jul 2009 
Unmeasured confounders are a common problem in drawing causal inferences in observational studies. VanderWeele (Biometrics 2008, 64, 702-706) presented a theorem that allows researchers to determine the sign of the unmeasured confounding bias when ...
rec_pub_19650054-the-sign-unmeasured-confounding-bias-various-standard-populations.htm
30 Jul 2009 A conceptually simple two-dimensional conditional reference curve is described. The curve gives a decision basis for determining whether a bivariate response from an individual is "normal" or "abnormal" when taking into account that a third ...
rec_pub_19650052-a-non-parametric-conditional-bivariate-reference-region-application.htm
30 Jul 2009 BACKGROUND: Digital visualisation of the anterior eye segment is becoming more and more important. Two commercially available optical coherence tomographs (OCTs) - Visante OCT (Carl-Zeiss Meditec Jena) and Slit Lamp-OCT (SL-OCT. Heidelberg ...
rec_pub_18830603-biometry-anterior-segment-using-optical-coherence-tomography.htm
The nasal septum: an osteometric study of 16 cadaver specimens.
30 Jul 2009 Studies of the shape, dimensions, and other morphologic characteristics of the nasal septum are scant in the literature. We conducted a study of 16 male cadavers to measure six osseous components of the nasal septum and to calculate the proportional ...
rec_pub_19688715-the-nasal-septum-osteometric-study-16-cadaver-specimens.htm
Comparison of refractive outcomes using immersion ultrasound biometry and IOLMaster biometry.
30 Jul 2009 BACKGROUND: The IOLMaster determines axial length using partial coherence interferometry. This study was designed to compare the refractive outcomes of patients who had been measured preoperatively by both immersion ultrasound and IOLMaster ...
rec_pub_19702705-comparison-refractive-outcomes-using-immersion-ultrasound-biometry.htm
30 Jul 2009 LEARNING OBJECTIVES: After studying this article, the participant should be able to: 1. Recognize the various terms used in biostatistics. 2. Describe the choices that are required in designing a particular research study. 3. Understand the ...
rec_pub_19644245-biostatistics.htm
Respondent-driven sampling as Markov chain Monte Carlo.
28 Jul 2009 Respondent-driven sampling (RDS) is a recently introduced, and now widely used, technique for estimating disease prevalence in hidden populations. RDS data are collected through a snowball mechanism, in which current sample members recruit future ...
rec_pub_19572381-respondent-driven-sampling-markov-chain-monte-carlo.htm
Model-based multiplicity estimation of population size.
28 Jul 2009 A survey is conducted at w of K selection units or lists, e.g. health care institutions or weeks in a year, to estimate N, the total number of individuals with particular characteristics. Our estimator utilizes two items determined for each survey ...
rec_pub_19572380-model-based-multiplicity-estimation-population-size.htm
28 Jul 2009 When data are abundant relative to the number of questions asked of them, answers can be formulated using little more than those data. But when data grow more sparse, so too does our tendency to lean on strong models to help us draw inferences. In ...
rec_pub_19507196-hip-psychometrics.htm
28 Jul 2009 Recently, structural equation models (SEMs) have been applied for analyzing interrelationships among observed and latent variables in biological and medical research. Latent variables in these models are typically assumed to have a normal ...
rec_pub_19472309-bayesian-semiparametric-analysis-structural-equation-models-mixed.htm
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