pbc_gmfamm {gmfamm}

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, and dead.

drug

a factor with levels placebo and D-penicilin.

age

at registration in years.

sex

a factor with levels male and female.

year

number of years between enrollment and this visit date.

status2

a numeric vector with value 1 denotign if the patient was dead, and 0 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

pbc2

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.