TRSbook (version 1.0.2)

INTIMA.MEDIA: Intima-Media Thickness

Description

Atherosclerosis is the main cause of death for men above 35 and women above 45 in most developed countries. It is a thickening and hardening of internal artery walls. One of its consequences is myocardial infarction. An artery wall is made of three layers; innermost to outermost, they are called intima, media and adventitia. Intima-media thickness is a marker of atherosclerosis. It was measured by ultra- sonography on a sample of 110 subjects in 1999 in Bordeaux hospitals. Information on the main risk factors was also collected.

Usage

data(INTIMA.MEDIA)

Format

A data frame with 110 observations measured on the 9 following variables:

GENDER

1=male, 2=female. Gender.

AGE

Age (in years) at date of consultation.

height

Hieght in cm.

weight

Weight in kg.

tobacco

0=non smoker, 1=former smoker, 2=smoker. Smoking status.

packyear

Number of packs per year. Estimation of tobacco consumption for smokers and former smokers.

SPORT

0=no, 1=yes. Physicial activity.

measure

Intima-media thickness in cm

alcohol

0=non-drinker, 1=occasional drinker, 2=regular drinker. Alcohol consumption.

Examples

# NOT RUN {
data(INTIMA.MEDIA)
str(INTIMA.MEDIA) 
# }