gap (version 0.4)

tbyt: LD statistics for two SNPs

Description

LD statistics for two SNPs

Usage

tbyt(h,n)

Arguments

h

a vector of haplotype frequencies

n

number of haplotypes

Value

• The returned value is a list containing:
• h
  the original haplotype frequency vector
• n
  the number of haplotypes
• D
  the linkage disequilibrium parameter
• VarD
  the variance of D
• Dmax
  the maximum of D
• VarDmax
  the variance of Dmax
• Dprime
  the scaled disequilibrium parameter
• VarDprime
  the variance of Dprime
• x2
  the Chi-squared statistic

References

Zapata C, Alvarez G, Carollo C (1997) Approximate variance of the standardized measure of gametic disequilibrium D'. Am. J. Hum. Genet. 61:771-774

See Also

kbyl

Examples

h <- c(0.442356,0.291532,0.245794,0.020319)
n <- 481*2
tbyt(h,n)