margLik {ppRep} | R Documentation |
Marginal likelihood of replication effect estimate
Description
This function computes the marginal likelihood of the
replication effect estimate tr
under the power prior model
f(\code{tr}|\code{to}, \code{so}, \code{sr}, \code{x}, \code{y}) =
\int_0^1 \int_{-\infty}^{\infty} \mathrm{N}(\code{tr}; \theta,
\code{sr}^2) \times \mathrm{N}(\theta; \mu, \phi)
\times \mbox{Beta}(\alpha; \code{x}, \code{y}) ~\mbox{d}\theta~
\mbox{d}\alpha
with \phi = 1/(1/\code{v} +
\alpha/\code{so}^2)
and \mu =
\phi\{(\alpha\times\code{to})/\code{so}^2 + \code{m}/\code{v}\}
using numerical integration.
Usage
margLik(tr, to, sr, so, x = 1, y = 1, m = 0, v = Inf, ...)
Arguments
tr |
Effect estimate of the replication study. |
to |
Effect estimate of the original study. |
sr |
Standard error of the replication effect estimate. |
so |
Standard error of the replication effect estimate. |
x |
Number of successes parameter of beta prior for |
y |
Number of failures parameter of beta prior for |
m |
Mean parameter of initial normal prior for |
v |
Variance parameter of initial normal prior for |
... |
Additional arguments passed to |
Value
Marginal likelihood
Author(s)
Samuel Pawel