GenData: Generate longitudnal (full) data

View source: R/GenData.R

GenDataR Documentation

Generate longitudnal (full) data

Description

yy

Usage

GenData(
  n = 52,
  N.fw = 2,
  rand.block = c(1, 1, 0, 0),
  allsd = rep(3, N.fw + 1),
  mean0 = rep(0, N.fw + 1),
  delta = rep(0, N.fw + 1),
  ar = 0.86 * 2,
  cor.01.1 = -0.15,
  cor.ij.1 = 0.68,
  cor.0j.1 = -0.27,
  seed = 24082020,
  MissProb = NULL,
  DigitsOutcome = NULL,
  TimeFactor = 1,
  DigitsTime = NULL
)

Arguments

n

sample size

N.fw

number of follow-up measurements (equally spaced, after baseline)

rand.block

for block randomization

allsd

vector of sd of primary outcome at baseline and end of follow-up (main outcome)

mean0

mean outcome at each visit in control group

delta

treatment effect (i.e. difference in mean) on primary outcome at each visit

ar

accrual rate (average, unit is per time between the equally spaced visits)

cor.01.1

correlation between outcome at baseline and at first visit (main outcome)

cor.ij.1

correlation between outcome at two consecutive follow-up measurements (main outcome)

cor.0j.1

correlation between outcome at baseline and at any visit after the first visit (main outcome)

seed

integer for the random seed generator state.

MissProb

Missingness probability. Should be an N.fw-dimensional array with in each dimension the proportion of missing and non missing (in that order). For instance for two follow-up, should be a matrix containing the probability of missing both (1,1), missing only the first timepoint (1,2) missing only the second timepoint (2,1) or have complete data (2,2).

DigitsOutcome

Number of digits to round the outcome values (NULL means no rounding)

TimeFactor

Multiply the times by a factor (e.g. 14 if time between two follow-up visit should be approx 14 days)

DigitsTime

Number of digits to round the times (NULL means no rounding)

Details

zz

Value

ff

Author(s)

Paul Blanche

Examples

x <- GenData()
head(x$d,n=20)


paulowhite/DelayedGSD documentation built on Nov. 1, 2023, 5:36 p.m.