| Glucose {ILS} | R Documentation |
Glucose in Serum
Description
Dataset corresponding to serum glucose (measurements of glucose concentration in blood used to control diabetes) testing. Eight laboratories conducted tests to five different blood samples tagged with different references, ranging them from low sugar content to very high. Three replicates were obtained for each sample. It is retrieved from ASTM E 691 standard.
Format
A data frame with 120 observations composed of the following 4 variables:
- Glucose
Glucose content in Serum.
- Replicate
Number of glucose measurement corresponding to each material.
- Material
Level of glucose, ranging from low content of sugar to very high level of glucose in blood.
- Laboratory
Laboratories conducted tests.
References
ASTM E 691 (1999). Standard practice for conducting an interlaboratory study to determine the precision of a test method. American Society for Testing and Materials. West Conshohocken, PA, USA.
Examples
library(ILS)
data(Glucose)
summary(Glucose)
attach(Glucose)
str(Glucose)
table(Replicate,Material,Laboratory)
table(Laboratory,Material)
st <- with(Glucose, tapply(Glucose, list(Material,Laboratory), mean))
st