R Dataset / Package DAAG / intersalt

Submitted by pmagunia on March 9, 2018 - 1:06 PM
Dataset License
GNU General Public License v2.0
Attachment Size
dataset-28920.csv 1.31 KB
Documentation

Blood pressure versus Salt; inter-population data

Description

Median blood pressure, as a fuction of salt intake, for each of 52 human populations.

Usage

intersalt

Format

A data frame with 52 observations on the following 4 variables.

b

a numeric vector

bp

mean diastolic blood pressure (mm Hg)

na

mean sodium excretion (mmol/24h)

country

a character vector

Details

For each population took a sample of 25 males and 25 females from each decade in the age range 20 - 50, i.e. 200 individuals in all.

Source

Intersalt Cooperative Research Group. 1988. Intersalt: an international study of electrolyte excretion and blood pressure: results for 24 hour urinary sodium and potassium excretion. British Medical Journal 297: 319-328.

References

Maindonald, J.H. The Design of Research Studies ? A Statistical Perspective, viii + 109pp. Graduate School Occasional Paper 00/2, Australian National University 2000.

Examples

data(intersalt)
plot(bp ~ na, data=intersalt, xlab="Median sodium excretion (mmol/24h)",
     ylab="Median diatoluc blood pressure (mm Hg)")
--

Dataset imported from https://www.r-project.org.

Documentation License
GNU General Public License v2.0

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