countries.
The other problem is the size of the data sample and
number of hospitals, from where costs information should be
gathered to valuate the medical services. On the one hand
the large number of hospitals can be more representative,
because it ensures the better picture of differences in the
severity of cases in the structure of hospitals in particular
country during calculations. On the other hand cost data from
the smaller number of hospitals can be of a higher quality, if
those hospitals use the high