ex0524: Vegetarians and Zinc: An Observational Study
In Sleuth2: Data Sets from Ramsey and Schafer's "Statistical Sleuth (2nd Ed)"
ex0524 R Documentation
Vegetarians and Zinc: An Observational Study
Description
Previous studies suggest that vegetarians may not receive enough zinc
in their diets and the zinc requirement is especially important during
pregnancy. Twenty-three women were monitored: twelve vegetarians who
were pregnant, six nonvegetarians who were pregnant, and five
vegetarians who were not pregnant. Is there any evidence that
pregnant vegetarians tend to have lower zinc levels than pregnant
nonvegetarians?
Usage
ex0524
Format
A data frame with 23 observations on the following 2 variables.
Zinclevels of Zinc (\mug/g) in the hair of women
Groupa factor with levels "PregNonVeg",
"PregVeg" and "NonPregVeg"
Source
Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A
Course in Methods of Data Analysis (2nd ed), Duxbury.
References
King, J.C., Stein, T. and Doyle, M. (1981). Effect of Vegetarianism on
the Zinc Status of Pregnant Women, American Journal of Clinical
Nutrition 34(6): 1049–1055.
Examples
str(ex0524)
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| ex0524 | R Documentation |
Vegetarians and Zinc: An Observational Study
Description
Previous studies suggest that vegetarians may not receive enough zinc in their diets and the zinc requirement is especially important during pregnancy. Twenty-three women were monitored: twelve vegetarians who were pregnant, six nonvegetarians who were pregnant, and five vegetarians who were not pregnant. Is there any evidence that pregnant vegetarians tend to have lower zinc levels than pregnant nonvegetarians?
Usage
ex0524Format
A data frame with 23 observations on the following 2 variables.
Zinclevels of Zinc (
\mug/g) in the hair of womenGroupa factor with levels
"PregNonVeg","PregVeg"and"NonPregVeg"
Source
Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.
References
King, J.C., Stein, T. and Doyle, M. (1981). Effect of Vegetarianism on the Zinc Status of Pregnant Women, American Journal of Clinical Nutrition 34(6): 1049–1055.
Examples
str(ex0524)
R Package Documentation
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We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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