cvdd {riskCommunicator} | R Documentation |
A subset of the framingham
teaching data
Description
A subset of the framingham
teaching dataset containing the following changes:
removal of all observations where PERIOD == 2 or PERIOD == 3 (i.e. keep only PERIOD == 1)
removal of all observations where PREVCHD == 1 (i.e. all patients with coronary heart disease at baseline)
created a new variable,
cvd_dth
signifying an outcome of cardiovascular disease OR death (i.e. if the patient had either CVD or DEATH, this new variable is 1, otherwise 0)created a new variable,
timeout
, which calculates the number of days from the start of the study to cardiovascular disease, death, or loss to follow-upcreated a new variable,
logpdays
, which is the log oftimeout
created a new variable,
nhosp
, which is a simulated number of hospitalizations
Usage
data(cvdd)
Format
A data frame with 4240 rows and 31 variables:
- RANDID
Unique identification number for each participant.
- SEX
Participant sex. 0 = Male, 1 = Female.
- TOTCHOL
Serum Total Cholesterol (mg/dL).
- AGE
Age at exam (years).
- SYSBP
Systolic Blood Pressure (mean of last two of three measurements) (mmHg).
- DIABP
Diastolic Blood Pressure (mean of last two of three measurements) (mmHg).
- CURSMOKE
Current cigarette smoking at exam. 0 = Not current smoker, 1 = Current smoker.
- CIGPDAY
Number of cigarettes smoked each day. 0 = Not current smoker.
- BMI
Body Mass Index, weight in kilograms/height meters squared.
- DIABETES
Diabetic according to criteria of first exam treated or first exam with casual glucose of 200 mg/dL or more. 0 = Not a diabetic, 1 = Diabetic.
- BPMEDS
Use of Anti-hypertensive medication at exam. 0 = Not currently used, 1 = Current use.
- HEARTRTE
Heart rate (Ventricular rate) in beats/min.
- GLUCOSE
Casual serum glucose (mg/dL).
- educ
Level of completed education. 1 = 0-11 years, 2 = high school or GED, 3 = some college, 4 = college graduate or higher.
- PREVSTRK
Prevalent Stroke. 0 = Free of disease, 1 = Prevalent disease.
- PREVHYP
Prevalent Hypertensive. Subject was defined as hypertensive if treated or if second exam at which mean systolic was >=140 mmHg or mean Diastolic >=90 mmHg. 0 = Free of disease, 1 = Prevalent disease.
- DEATH
Death from any cause. 0 = Did not occur during followup, 1 = Did occur during followup.
- ANGINA
Angina Pectoris. 0 = Did not occur during followup, 1 = Did occur during followup.
- HOSPMI
Hospitalized Myocardial Infarction. 0 = Did not occur during followup, 1 = Did occur during followup.
- MI_FCHD
Hospitalized Myocardial Infarction or Fatal Coronary Heart Disease. 0 = Did not occur during followup, 1 = Did occur during followup.
- ANYCHD
Angina Pectoris, Myocardial infarction (Hospitalized and silent or unrecognized), Coronary Insufficiency (Unstable Angina), or Fatal Coronary Heart Disease. 0 = Did not occur during followup, 1 = Did occur during followup.
- STROKE
Atherothrombotic infarction, Cerebral Embolism, Intracerebral Hemorrhage, or Subarachnoid Hemorrhage or Fatal Cerebrovascular Disease. 0 = Did not occur during followup, 1 = Did occur during followup.
- CVD
Myocardial infarction (Hospitalized and silent or unrecognized), Fatal Coronary Heart Disease, Atherothrombotic infarction, Cerebral Embolism, Intracerebral Hemorrhage, or Subarachnoid Hemorrhage or Fatal Cerebrovascular Disease. 0 = Did not occur during followup, 1 = Did occur during followup.
- HYPERTEN
Hypertensive. Defined as the first exam treated for high blood pressure or second exam in which either Systolic is 6 140 mmHg or Diastolic 6 90mmHg. 0 = Did not occur during followup, 1 = Did occur during followup.
- cvd_dth
Cardiovascular disease OR death. 0 = Did not occur during followup, 1 = Did occur during followup.
- timeout
Number of days from the start of the study to cardiovascular disease, death, or loss to follow-up.
- drop
Participant was lost to follow-up before 24 months complete followup. 0 = no, 1 = yes
- glucoseyear6
Casual serum glucose (mg/dL) after 6 years of follow-up
- logpdays
Natural log of
timeout
.- bmicat
BMI category. 0 = Normal, 1 = Underweight, 2 = Overweight, 3 = Obese.
- nhosp
Simulated number of hospitalizations over 24 months, associated with age, sex, BMI, and diabetes (not collected in the Framingham study).
Details
The National Heart, Lung, and Blood Institute of the National Institutes of Health developed a longitudinal, epidemiology-focused dataset using the Framingham Heart Study. The Framingham Heart Study is a long term prospective study of the etiology of cardiovascular disease among a population of free living subjects in the community of Framingham, Massachusetts. The Framingham Heart Study was a landmark study in epidemiology in that it was the first prospective study of cardiovascular disease and identified the concept of risk factors and their joint effects. The study began in 1948 and 5,209 subjects were initially enrolled in the study. Participants have been examined biennially since the inception of the study and all subjects are continuously followed through regular surveillance for cardiovascular outcomes. Clinic examination data has included cardiovascular disease risk factors and markers of disease such as blood pressure, blood chemistry, lung function, smoking history, health behaviors, ECG tracings, Echocardiography, and medication use. Through regular surveillance of area hospitals, participant contact, and death certificates, the Framingham Heart Study reviews and adjudicates events for the occurrence of Angina Pectoris, Myocardial Infarction, Heart Failure, and Cerebrovascular disease. This dataset contains three clinic examinations and 20 year follow-up data on a large subset of the original Framingham cohort participants.
NOTE: This is a "teaching" dataset. Specific methods were employed to ensure an anonymous dataset that protects patient confidentiality; therefore, this dataset is inappropriate for publication purposes." The use of these data for the purposes of this package were approved on 11Mar2019 (request #7161) by NIH/NHLBI.
Source
https://biolincc.nhlbi.nih.gov/teaching/