TEM: Technical Error of Measurement

In dsnavega/osteometrika: osteometrika: an R package for human osteological data analysis

Description

Compute technical error of measurement and associated normalized versions

Usage

tem(x, digits = 4)

Arguments

x	a data.frame of numeric vectors containing multiple replicated observation performed by the same rater/observer or replicated observations performed by different observers.
digits	number of decimal places (rounding)

Value

a list with the following components:

TEM	Technical error of measurement (in the units of x)
rTEM	Relative technical error of measurement (as percentage)
R	Coefficient of Reliability (dimensionless)
n	an integer with the number of valid observations
k	an integer indicating the number of observers or replications

Note

rTEM, Relative TEM, represents a normalization of TEM using the mean of x. R, Coefficient of Reliability or Variation, represents a normalization of TEM using the variance of x.

Missing values are handle by row-wise deletion.

Author(s)

David Navega

References

SJ Ulijaszek, DA Kerr. 1999. Anthropometric measurement error and the assessment of nutritional status. British Journal of Nutrition, 82: 165 - 177.

CJ Utermohle, SL Zegura, GM Heathcote. 1983. Multiple Observers, Humidity, and Choice of Precision Statistics: Factors Influencing Craniometric Data Quality. American Journal of Physical Anthropology, 61: 85 -95.

dsnavega/osteometrika documentation built on April 2, 2020, 9:36 a.m.