PEDSTATS Tutorial -- Gender-Specific Output
When the --bySex command line option is specified, PEDSTATS will break down all text summaries by gender and when combined with the
--pdf option, will
sex-specific graphical summaries of pairwise trait, covariate and affection variables.
Sex-specific Graphical Summary of Covariate and Quantitative Trait Variables
For each covariate and trait variable, PEDSTATS will plot pairwise values by gender for each pair type
that has more than a few phenotyped pairs. Figure 1 shows a gender-specific summary of
sib-pair values for a covariate
called "DREAM COUNT". For opposite sex pairs, two plots are produced; the first mirrors each value pair to facilitate
comparision with the single sex plots. The second plot in the lower right plots each brother-sister pair once, with the male value as the x-coordinate,
and the female value as the y-coordinate. When the relative pair type has an inherent ancestor-descendant ordering (i.e
grandparent-grandchild, parent-child and avuncular relationships), each of the four types of pair
(male ancestor - male descendant, male ancestor - female descendant, female ancestor - male descendant, and female ancestor - female
descendant) are plotted separately. Figure 2 shows the distribution of
amoung avuncular pairs.
Figure 1. Unordered relative pair relationship
Figure 2: Ordered relative pair relationship
Graphical Summary of Dichotomous Variables
For dichotomous traits, a breakdown of affection status similar to that
shown in Figure 3 is given for each relative pair type.
Figure 3. Affection by gender among parent-child pairs