By means of complex statistical analysis methods they found that in the investigated bird species maximum longevity is negatively related to the number of predator species occurring within the same geographical area. (sciencedaily.com)
Also, I've had a lot of experience with simulations and complex statistical analysis in other contexts. (realclimate.org)
In turn, the team itself also expanded to include more collaborators with expertise in the increasingly complex statistical analysis the project demanded. (sciencedaily.com)