ARMD {Surrogate} | R Documentation |
Data of the Age-Related Macular Degeneration Study
Description
These are the data of a clinical trial involving patients suffering from age-related macular degeneration (ARMD), a condition that involves a progressive loss of vision. A total of patients from
centers participated in the trial. Patients' visual acuity was assessed using standardized vision charts. There were two treatment conditions (placebo and interferon-
). The potential surrogate endpoint is the change in the visual acuity at
weeks (
months) after starting treatment. The true endpoint is the change in the visual acuity at
weeks.
Usage
data(ARMD)
Format
A data.frame
with observations on
variables.
Id
The Patient ID.
Center
The center in which the patient was treated.
Treat
The treatment indicator, coded as
= placebo and
= interferon-
.
Diff24
The change in the visual acuity at
weeks after starting treatment. This endpoint is a potential surrogate for
Diff52
.Diff52
The change in the visual acuity at
weeks after starting treatment. This outcome serves as the true endpoint.