GenABEL - description of perid.summary() output

Question

[Tobias.Wohland]

Hi, I couldn't find any specific information on the output of the perid.summary function of the GenABEL package. The colnames and one example line of the data.frame are (nids == 100, nsnps == 100000) :

            NoMeasured  NoPoly  Hom     E(Hom)  Var     F       CallPP   Het
ID18        94074       93875   0.6668  0.6769  0.5167 -0.03117 0.94074  0.3331

"NoMeasured", "Hom", "CallPP" and "Het" are clear but what exactly display the other columns.

I would guess that "Var" is a variance but what variance?

"E(Hom)" is probably the expected value of the frequency of homozygosity?

"NoPoly" is obviously a number of snps per sample but for what criteria?

I have no clue for "F"?

Unfortunately, there is no complete information on that, neither in the official GenABEL reference manual nor the GenABEL tutorials. I hope someone, probably the authors, can help me.

Best, Tobi