fnfam: Internal function called by ntdt

In powerpkg: Power Analyses for the Affected Sib Pair and the TDT Design

Internal function called by ntdt

Description

An internal function called by the 'ntdt' function based on formulae from Abel and Muller-Myhsok (1998) Am J Hum Genet 63:664-667

Usage

fnfam(n, power, alpha, p1, h)

Arguments

n	number of families.
power	the power of the test.
alpha	the desired significance level.
p1	defined by Abel and Muller-Myhsok.
h	defined by Abel and Muller-Myhsok.

Details

See Abel and Muller-Myhsok

Value

n	the number of tdt trios needed for the desired power.

Note

These are based on a Mathematica notebook created by Martin Farrall.

Author(s)

Daniel E. Weeks

References

Abel L, Muller-Myhsok B. Maximum-likelihood expression of the transmission/disequilibrium test and power considerations. Am J Hum Genet. 1998 Aug;63(2):664-7.

See Also

plotNtdt, ntdt, ntdt.q

Examples

## NONE: Internal function

powerpkg documentation built on May 20, 2022, 1:09 a.m.