Supplement 1. SAS code to produce Mahalanobis D2 and its partitions.

File List SAS_code_for_D2_partition_revised.txt Description SAS code (SAS Institute 2001) to produce Mahalanobis D2 and its partitions (Clark et al. 1993, Dunn and Duncan 2000, Rotenberry et al. 2002). Code modified from Duncan and Dunn (2001). Text may be pasted directly into SAS Editor. User must either ensure appropriately named SAS library and data sets already exist, or modify code to conform to user's existing library and data set names. Further directions appear as comments within body of SAS code.