ecg: Effect of overweight and smoking on coronary heart disease

In nxskok/d29data: Data used in course STAD29 at UTSC

Description

In a hospital accident and emergency service 176 subjects who attended for acute chest pain were enrolled in a study. Of these 71 had abnormal electrocardiograms and in the case of 105 it was normal. Of those with abnormal electrocardiograms, 57 were overweight as judged by their body mass index, and 14 were normal. By comparison out of the 105 subjects with normal electrocardiograms 40 were overweight and 65 normal. In the first group of 71 subjects with abnormal electrocardiograms, out of the 57 overweight subjects 47 were smokers and 10 non-smokers. Amongst the 14 with normal weights 8 were smokers and 6 non-smokers. In the second group of 105 with normal electrocardiograms out of the 40 overweight subjects 25 were smokers and 15 non-smokers. Amongst the 65 with normal weights 35 were smokers and 30 non-smokers. The investigators wish to assess the contribution that overweight and smoking make to coronary artery disease.

Usage

data(ecg)

Format

8 rows of 4 variables:

ecg

whether the electrocardiagram was normal or abnormal

bmi

Indication of normal weight or overweight by body mass index

smoke

Smoker, yes or no

count

Frequency of combination of other variables

Source

http://www.oxfordjournals.org/our_journals/tropej/online/ma_chap14.pdf, from which above explanation also taken.

nxskok/d29data documentation built on May 24, 2019, 11:51 a.m.