ipdmeta (version 1.1)

meta.data: Simulated study-level clustered survival data

Description

Study-level trials of MLMA dataset. 10 eligible randomized controlled parallel-group trials, 8 providing data at the patient-level (ipd.data) and 2 providing KM plots by treatment arm.

This is the aggregate component of a simulated mixed data meta dataset which supposes that 2 of 10 eligible studies did not provide patient-level data.

Intended for illustrating use of mixed-level meta-analysis estimation for a time-to-event outcome.

format

ll{ time Time corresponding to survival estimate surv Survival estimate from treatment.group KM curve sigma2 Corresponding variance of KM survival estimate group Cluster factor, 1 to 10 x Treatment within study sample mean of covariate sub.group Factor of treatment and group }

See Also

survfit, ipd.data

Examples

data(meta.data)

xyplot(surv~time|factor(trt,lab=c("Control","Treated")),
                        xlim=c(0,6),xlab="Time",ylab="S(t)",
                        group=factor(group,lab=paste("Trial",9:10)),
                        meta.data,type="b",aspect=1,
                        auto.key=TRUE)