ex0112: Fish Oil and Blood Pressure

In Sleuth2: Data Sets from Ramsey and Schafer's "Statistical Sleuth (2nd Ed)"

Description

Researchers used 7 red and 7 black playing cards to randomly assign 14 volunteer males with high blood pressure to one of two diets for four weeks: a fish oil diet and a standard oil diet. These data are the reductions in diastolic blood pressure.

Usage

ex0112

Format

A data frame with 14 observations on the following 2 variables.

BP

reduction in diastolic blood pressure (in mm of mercury)

Diet

factor variable indicating the diet that the subject followed

Source

Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.

References

Knapp, H.R. and FitzGerald, G.A. (1989). The Antihypertensive Effects of Fish Oil, New England Journal of Medicine 320: 1037–1043.

Examples

str(ex0112)

Example output

'data.frame':	14 obs. of  2 variables:
 $ BP  : num  8 12 10 14 2 0 0 -6 0 1 ...
 $ Diet: Factor w/ 2 levels "fishoil","regularoil": 1 1 1 1 1 1 1 2 2 2 ...

Sleuth2 documentation built on May 2, 2019, 7:01 a.m.