As I see it, these are basically what are called p-values: probabilities that the result could be achieved in true randomness. With a 100% p-value, there is a 100% chance that the draw would be perfectly random. Usually in statistics, a p-value of something less than 5% is needed for the result to be significant. Since this study had one of .3% for the men and 0% for the women, it'd be significant. Hope that makes sense.