Related Experiment Video
Updated: Jun 26, 2026
09:36
Assessment of Child Anthropometry in a Large Epidemiologic Study
Published on: February 2, 2017
Validation of predictive equations for weight and height using a metric tape
E I Rabito1, M S Mialich, E Z Martínez
1Nutrition Division, Department of Internal Medicine, Faculty of Medicine, University of Sao Paolo (USP), Ribeirão Preto, Brazil.
Nutricion Hospitalaria
|January 10, 2009
Summary
New predictive equations offer accurate weight and height estimations for hospitalized patients when standard measurements are not feasible. These equations simplify nutritional status assessment using readily available anthropometric data.
Area of Science:
- Anthropometry
- Clinical Nutrition
- Biostatistics
Background:
- Accurate weight and height are crucial for nutritional status evaluation.
- Standard measurements can be challenging in certain clinical settings.
- Predictive equations offer an alternative for estimating these vital parameters.
Purpose of the Study:
- To validate three predictive equations for weight and two for height developed by Rabito.
- To assess the agreement of these equations with those proposed by Chumlea.
Main Methods:
- Collected data included sex, age, and various anthropometric measurements (weight, height, skinfolds, circumferences, arm length, half span).
- Statistical analysis employed Lin's coefficient for equation agreement and St. Laurent's coefficient for comparing estimated vs. real values.
Main Results:
- Equations I and II demonstrated high agreement for weight estimation.
- Equations IV and V showed high agreement for height estimation.
- St. Laurent's coefficient confirmed the validity of equation III for weight and equation V for height.
Conclusions:
- Equation III for weight and equation VH for height are recommended for use in hospitalized patients due to their ease of application.
- Further validation of these predictive equations in diverse settings is warranted.
Related Concept Videos
01:18Distance Measurements by Taping
Tapes are essential in surveying for accurate, durable, and short-distance measurements. Made from lightweight, nylon-coated steel, they offer flexibility and strength for rugged outdoor use. The nylon coating protects against rust and wear, extending the tape's life. Standard lengths, around 30 meters, are marked in meters and millimeters for precision.Surveyors select tapes based on site conditions and accuracy needs. Lightweight, nylon-coated tapes are commonly used for ease of handling and...
01:15Distance Corrections
To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
03:40Dimensional Analysis
Dimensional analysis, also known as the factor label method, is a versatile approach for mathematical operations. The main principle behind this approach is: the units of quantities must be subjected to the same mathematical operations as their associated numbers. This method can be applied to computations ranging from simple unit conversions to more complex and multi-step calculations involving several different quantities and their units.
Conversion Factors and Dimensional Analysis
The unit...
Conversion Factors and Dimensional Analysis
The unit...
01:23Dimensional Analysis
Dimensional analysis is a powerful tool that is used in physics and engineering to understand and predict the behavior of physical systems. The basic idea behind dimensional analysis is to express physical quantities in terms of fundamental dimensions such as the mass, length, and time. Derived dimensions like the velocity, acceleration, and force are derived from the combinations of these fundamental dimensions.
Dimensional analysis allows us to analyze and compare physical quantities on a...
Dimensional analysis allows us to analyze and compare physical quantities on a...
02:19Dimensional Analysis
The concept of dimension is important because every mathematical equation linking physical quantities must be dimensionally consistent, implying that mathematical equations must meet the following two rules. The first rule is that, in an equation, the expressions on each side of the equal sign must have the same dimensions. This is fairly intuitive since we can only add or subtract quantities of the same type (dimension). The second rule states that, in an equation, the arguments of any of the...
01:12Taping Over Different Ground Profiles
Taping over varying ground profiles requires careful adaptation to achieve accurate measurements. On smooth, level ground with minimal vegetation, the tape can rest directly on the ground. Here, the taping team, typically consisting of a head and a rear tapeman, coordinates their positions with clear communication. The rear tapeman holds the tape at the starting point and guides the head tapeman toward a range pole placed beyond the endpoint, using hand or voice signals to ensure alignment.On...