Description Format Details Source See Also Examples
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.
1 |
Attaching package: 'nlmeU'
The following object is masked from 'package:stats':
sigma
subject lesion line0 visual0 visual4
1 : 1 Min. :1.000 Min. : 5.0 Min. :20.00 Min. :12.00
2 : 1 1st Qu.:1.000 1st Qu.: 9.0 1st Qu.:45.00 1st Qu.:42.00
3 : 1 Median :2.000 Median :11.0 Median :56.50 Median :53.00
4 : 1 Mean :1.891 Mean :10.9 Mean :54.95 Mean :52.46
5 : 1 3rd Qu.:2.500 3rd Qu.:13.0 3rd Qu.:66.00 3rd Qu.:64.00
6 : 1 Max. :4.000 Max. :17.0 Max. :85.00 Max. :84.00
(Other):234 NA's :1 NA's :9
visual12 visual24 visual52 treat.f miss.pat
Min. : 3.00 Min. : 5.00 Min. : 4.00 Placebo:119 ---- :188
1st Qu.:39.50 1st Qu.:36.00 1st Qu.:27.00 Active :121 ---X : 24
Median :52.00 Median :47.00 Median :40.00 --XX : 8
Mean :50.84 Mean :47.49 Mean :41.97 -XXX : 6
3rd Qu.:64.50 3rd Qu.:62.00 3rd Qu.:56.50 XXXX : 6
Max. :85.00 Max. :85.00 Max. :85.00 --X- : 4
NA's :13 NA's :26 NA's :45 (Other): 4
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