Description Usage Arguments Value Note Author(s) References
Compute technical error of measurement and associated normalized versions
1 | tem(x, digits = 4)
|
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) |
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 |
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.
David Navega
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.
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