armd.wide | R Documentation |
Data from Age-Related Macular Degeneration (ARMD) clinical trial
The armd.wide
data frame has 240 rows and 10 columns. Data are
stored in wide format with each row corresponding to one subject.
a factor with 240 levels 1
, 2
, 3
, 4
, 5
, ..., 240
an integer vector with values 1, 2, 3, 4
an integer vector with values ranging from 5 to 17
an integer vector with values of visual acuity measured at baseline ranging from 20 to 85
an integer vector with values of visual acuity measured at 4 weeks ranging from 12 to 84
an integer vector with values of visual acuity measured at 12 weeks ranging from 3 to 85
an integer vector with values of visual acuity measured at 24 weeks ranging from 5 to 85
an integer vector with values of visual acuity measured at 52 weeks from 4 to 85
a factor with 2 levels Placebo
, Active
a factor with 9 levels ----
, ---X
, --X-
, --XX
, -XX-
, ...,XXXX
The ARMD data arise from a randomized multi-center clinical trial comparing an experimental treatment (interferon-alpha) versus placebo for patients diagnosed with ARMD.
Pharmacological Therapy for Macular Degeneration Study Group (1997). Interferon alpha-IIA is ineffective for patients with choroidal neovascularization secondary to age-related macular degeneration. Results of a prospective randomized placebo-controlled clinical trial. Archives of Ophthalmology, 115, 865-872.
armd
, armd0
summary(armd.wide)
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