Biologists frequently summarize multivariate data from n populations by computing some measure of distance between populations. The problem then arises of comparing two such pairwise distance matrices based on different characters. A permutation test for correlation between distance matrices is proposed. This test, based on Kendall's tau statistic, is compared to Pearson's product-moment and Sp...

BACKGROUND Questionnaires are widely used to obtain information on health-related behaviour, and they are more often than not the only method that can be used to assess the distribution of behaviour in subgroups of the population. No validation studies of reported consumption of tobacco or alcohol have been published from circumpolar indigenous communities. OBJECTIVE The purpose of the study ...

Reliable analyses can help wildlife managers make good decisions, which are particularly critical for controversial decisions such as wolf (Canis lupus) harvest. Creel and Rotella (2010) recently predicted substantial population declines in Montana wolf populations due to harvest, in contrast to predictions made by Montana Fish, Wildlife and Parks (MFWP). We replicated their analyses considerin...