To determine if the estimated net brood production can provide an additional aid for stand prioritization, we calculated the correlation between stand susceptibility index and stand net brood production. We should expect a correlation since a stand’s net brood production is related to the four variables that are used to calculate the index, i.e., percentage of susceptible pine basal area, age, tree density and location (latitude, longitude and elevation). If this correlation explains most of the variation, then we would conclude that the estimated net brood production would not add to the index, and hence would not be a useful tool for stand treatment prioritization.