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Updated: May 16, 2025

Development of an Individual-Tree Basal Area Increment Model using a Linear Mixed-Effects Approach
04:35

Development of an Individual-Tree Basal Area Increment Model using a Linear Mixed-Effects Approach

Published on: July 3, 2020

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开发和验证一个简单的模型来预测患者的身高

Emily E Moin1,2, Nicholas J Seewald3, Scott D Halpern1,2,3

  • 1Division of Pulmonary, Allergy, and Critical Care, University of Pennsylvania, Philadelphia.

medRxiv : the preprint server for health sciences
|March 31, 2025
PubMed
概括

准确的身高预测对于健康评估至关重要. 这项研究开发了一种使用自我报告的身高和年龄的验证模型,以提高人口健康数据的准确性.

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An R-Based Landscape Validation of a Competing Risk Model05:37

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Many human characteristics, like height, are shaped by both nature—in other words, by our genes—and by nurture, or our environment. For example, chronic stress during childhood inhibits the production of growth hormones and consequently reduces bone growth and height. Scientists estimate that 70-90% of variation in height is due to genetic differences among individuals, and 10-30% of variation in height is due to differences in the environments that individuals experience,...
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Variation: Normal Distribution, Range, and Standard Deviation02:32

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In the field of psychology, there are several ways to organize measurements of a trait, feature, or characteristic (i.e., variables). Qualitative data, such as ethnicity, can be tabulated into a frequency count to provide information about the proportion, as well as the variety of groups in a sample or population. On the other hand, researchers can perform a wider set of calculations on quantitative data. The mean, mode, and median, for instance, are central tendency measures to identify a...
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