This tab displays the odds ratio volcano plots from all the annotation groups in a single display.

The y-axis

variable of this scatter plot is the

p-value from the

association test, converted to the

-log or

-log10 scale if selected in the process

dialog. The

x-axis plots the

log of the odds ratio for each marker. If the

log odds are 0, then the odds ratio is 1 implying the odds of being affected with the disease (or whatever the

trait variable represents) is the same for any number of

minor alleles at that particular

SNP. Values on the

x-axis greater than 0 represent odds ratios greater than 1, and thus the odds of being affected increases with the number of minor alleles composing the

genotype. The opposite is true for log odds less than 0. A horizontal reference line is drawn as a red, dashed line at the significance level that was specified. For

-log- or

-log10-converted p-values, markers above this line are significant; for

p-values on the original scale, markers below the line are significant.