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Biometry (Latest Articles)
Latest indexed articles for 'Biometry'
Articles 71 to 80 of 200:
Correction of myopia after cataract surgery with a light-adjustable lens.
2 Jun 2009 
PURPOSE: To determine whether residual myopia could be corrected postoperatively using the light-adjustable lens (LAL) technology in patients undergoing cataract surgery and LAL implantation. DESIGN: A prospective clinical study was conducted at ...
rec_pub_19500852-correction-myopia-cataract-surgery-light-adjustable-lens.htm
30 May 2009 PURPOSE: To compare the repeatability and reproducibility of corneal curvature measurements using the Pentacam eye scanner (Oculus Optikgeräte GmbH) and Keratron corneal topographer (Optikon 2000 SpA). METHODS: Axial topography maps were used to ...
rec_pub_19603622-repeatability-reproducibility-corneal-curvature-measurements-using.htm
The ergonomic relevance of anthropometrical proportions. Part I: body length measures.
30 May 2009 Anthropometrical findings about proportions of the human body have a long tradition; most of them, however, are rather theoretical. To improve this situation a pragmatic and applicable definition of proportions, normal as well as deviating, is ...
rec_pub_19652449-the-ergonomic-relevance-anthropometrical-proportions-body-length.htm
Estimation of the ROC curve under verification bias.
30 May 2009 The ROC (receiver operating characteristic) curve is the most commonly used statistical tool for describing the discriminatory accuracy of a diagnostic test. Classical estimation of the ROC curve relies on data from a simple random sample from the ...
rec_pub_19588455-estimation-roc-curve-verification-bias.htm
30 May 2009 We assessed complementary log-log (CLL) regression as an alternative statistical model for estimating multivariable-adjusted prevalence ratios (PR) and their confidence intervals. Using the delta method, we derived an expression for approximating ...
rec_pub_19588454-complementary-log-log-regression-estimation-covariate-adjusted.htm
30 May 2009 A multivariate probit model for correlated binary responses given the predictors of interest has been considered. Some of the responses are subject to classification errors and hence are not directly observable. Also measurements on some of the ...
rec_pub_19588453-analysis-misclassified-correlated-binary-data-using-multivariate.htm
The concordance index C and the Mann-Whitney parameter Pr(X>Y) with randomly censored data.
30 May 2009 Harrell's c-index or concordance C has been widely used as a measure of separation of two survival distributions. In the absence of censored data, the c-index estimates the Mann-Whitney parameter Pr(X>Y), which has been repeatedly utilized in ...
rec_pub_19588452-the-concordance-index-c-mann-whitney-parameter-pr-x-y-randomly.htm
Multilevel mixture cure models with random effects.
30 May 2009 This paper extends the multilevel survival model by allowing the existence of cured fraction in the model. Random effects induced by the multilevel clustering structure are specified in the linear predictors in both hazard function and cured ...
rec_pub_19588451-multilevel-mixture-cure-models-random-effects.htm
A Bayesian long-term survival model parametrized in the cured fraction.
30 May 2009 The main goal of this paper is to investigate a cure rate model that comprehends some well-known proposals found in the literature. In our work the number of competing causes of the event of interest follows the negative binomial distribution. The ...
rec_pub_19572318-a-bayesian-long-term-survival-model-parametrized-cured-fraction.htm
Comparing accuracy in an unpaired post-market device study with incomplete disease assessment.
30 May 2009 The sensitivity and specificity of a new medical device are often compared relative to that of an existing device by calculating ratios of sensitivities and specificities. Although it would be ideal for all study subjects to receive the gold ...
rec_pub_19572317-comparing-accuracy-unpaired-post-market-device-study-incomplete.htm
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