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The AUTOGRP procedure (used for both RUG-II and PDGs) generates "fixed-boundary" groups, where there is no representation of heterogeneity within groups.
Because the stepwise procedure in AUTOGRP produces different groupings for different orders of inclusion of variables, expert input is required to select a solution.
In AUTOGRP, though the single dependent criterion variable is continuous, all clinical attributes used as independent variables to form trial partitions must also be transformed into categorical variables.
In contrast, AUTOGRP minimizes the unexplained variation of a single dependent service-use variable using partitions selected stepwise from a set of discretely coded clinical variables.
To describe the two nursing home case-mix systems, we first discuss their generation by the AUTOGRP procedure.
AUTOGRP was desgiend to be interactive so it can be used in a process for generating groups that involve subjective input.
Both modified AUTOGRP partitions using clinical judgment.