It is much harder to measure routine practice compared with
assessing single encounters. Most single-encounter measures, such
as those described above, are indirect, that is, they look at the
products of routine practice rather than the practice itself. One
method that looks at practice more directly albeit through the eyes
of peers is multiple source feedback (MSF). MSF tools represent
a way in which the perspectives of colleagues and patients can be
collected and collated in a systematic manner so that they can be
used to both assess performance and at the same time provide a
source of feedback for doctors in training.