enrollment function

Simulating enrollment dates

This function simulates enrollment dates using either poisson distribution

enrollment(param, N_total, time = NULL)

Arguments

• param: a vector of lambda in poisson
• N_total: a numeric value of total sample size
• time: a vector of the length(param) - 1 indicating end of time when a specific lambda is used

Returns

a vector of enrollment dates

Examples

enrollment(param = c(0.003, 0.7), 100, time = 10)
enrollment(param = c(0.3, 0.5, 0.9, 1.2, 2.1), 200, c(20, 30, 40, 60))