This article describes the Joint Commission's implementation plans, experie
nce and results to date of incorporating performance measurement data into
the accreditation process. These plans have evolved in response to changes
in the health care environment feed-back from accredited organizations, and
both technical and political obstacles encountered During the late 1980s,
the Joint Commission developed a national performance measurement system, t
he IMSystem, to incorporate information about the process and outcomes of c
are into the accreditation process. in 1995, the ORYX initiative was introd
uced to offer health care organizations significant flexibility in selectin
g a measurement system and measures while promoting organizational self-imp
rovement and accountability. Recently, the plans have evolved to incorporat
e standardized core measures that are known to be valid and reliable. These
initiatives have moved the field much closer to the day when quality asses
sment will reflect a comprehensive view of organizational performance, base
d, in part, on performance measurement data. (C) 1999 Sage Publications, In
c.