armd.wide {nlmeU}

armd.wide Data (240 x 10)

Description

Data from Age-Related Macular Degeneration (ARMD) clinical trial

Format

The armd.wide data frame has 240 rows and 10 columns. Data are stored in wide format with each row corresponding to one subject.

subject

a factor with 240 levels 1, 2, 3, 4, 5, ..., 240

lesion

an integer vector with values 1, 2, 3, 4

line0

an integer vector with values ranging from 5 to 17

visual0

an integer vector with values of visual acuity measured at baseline ranging from 20 to 85

visual4

an integer vector with values of visual acuity measured at 4 weeks ranging from 12 to 84

visual12

an integer vector with values of visual acuity measured at 12 weeks ranging from 3 to 85

visual24

an integer vector with values of visual acuity measured at 24 weeks ranging from 5 to 85

visual52

an integer vector with values of visual acuity measured at 52 weeks from 4 to 85

treat.f

a factor with 2 levels Placebo, Active

miss.pat

a factor with 9 levels ----, ---X, --X-, --XX, -XX-, ...,XXXX

Details

The ARMD data arise from a randomized multi-center clinical trial comparing an experimental treatment (interferon-alpha) versus placebo for patients diagnosed with ARMD.

Source

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.

See Also

armd, armd0

Examples

summary(armd.wide)