respir: Clinical trial comparing two treatments for a respiratory...

Description Usage Format Details Warning Note Source References Examples

Description

The data are from a clinical trial of patients with respiratory illness, where 111 patients from two different clinics were randomized to receive either placebo or an active treatment.

Usage

1

Format

A data frame with 555 observations on the following 7 variables.

id

a factor with 56 levels

gender

a factor with levels F and M

center

a factor with levels C1 and C2

treatment

a factor with levels placebo and active

age

a numeric vector

visit

a numeric vector

status

a factor with levels poor and good (response)

Details

Patients were examined at baseline and at four visits during treatment. At each examination, respiratory status (categorized as 1 = good, 0 = poor) was determined.

Warning

The original description says there are 111 patients, yet the data contain only 56 IDs.

Note

Original variable names have been adapted to R conventions. Data were reshaped from wide to long format and the response named status. The center ID was prefixed with the letter “C” in the center variable, compared to the source.

Source

http://biosun1.harvard.edu/~fitzmaur/ala

References

Stokes ME, Davis CS, Koch GG (1995) Categorical Data Analysis using the SAS System. Cary, NC: SAS Institute, Inc.

Examples

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ALA documentation built on May 21, 2017, 1:32 a.m.

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