pbc_gmfamm {gmfamm} | R Documentation |
Subset of PBC data set for GMFAMM
Description
A subset of data from the pbc2 data set which is the Mayo Clinic Primary Biliary Cirrhosis Data, where only patients who survived at least 10 years since they entered the study and were alive and had not had a transplant at the end of the 10th year.
Usage
pbc_gmfamm
Format
## 'pbc_gmfamm' A data frame with 5,943 rows and 10 columns:
- id
patients identifier; in the subset, there are 50 patients included.
- years
number of years in the study without event
- status
a factor with levels
alive
,transplanted
, anddead
.- drug
a factor with levels
placebo
andD-penicilin
.- age
at registration in years.
- sex
a factor with levels
male
andfemale
.- year
number of years between enrollment and this visit date.
- status2
a numeric vector with value
1
denotign if the patient was dead, and0
if the patient was alive or transplanted.- outcome
a factor with levels
albumin
,alkaline
,ascites
,edema
,hepatomegaly
,histologic
,platelets
,prothrombin
,serBilir
,serChol
,SGOT
,spiders
.- y
value of the corresponding outcome at the visit date.
Details
Additionally, subject 124 is excluded as it has only one longitudinal measurement per outcome. Function gfpca_twoStep, however, assumes at least two longitudinal observations per subject.
Source
References
Hall et al. (2008): Modelling sparse generalized longitudinal observations with latent gaussian processes. Journal of the Royal Statistical Society Series B: Statistical Methodology, 70(4), 703-723.