Het volume van chirurgische ingrepen en de impact ervan op ... - KCE

50 Volume Outcome KCE reports 113
Figure 5.1: Oesophageal cancer surgery: Volume per hospital
X means stage not known.
Figure 5.2: Oesophageal cancer surgery: Volume per surgeon
X means stage not known.
5.2.5 Definition of outcomes
5.2.5.1 Mortality
Because of errors in the MCD (discussed in section 4.2.4.2 page 41), in-hospital
mortality was not congruous with approximate 30-day mortality. We therefore merged
both sources of information into one outcome measure i.e. “in-hospital and
approximate 30-day mortality”. Note that the 30-day mortality is an approximation i.e.
minimum 1 day and maximum 60 days, as explained in Chapter 2 (see section 2.3.2.2,
page 15).
Table 5.8 shows that in-hospital and approximate 30-day mortality was 9.1% after
oesophagectomy for cancer. Mortality at two years was 44.7%. Median survival time was
29 months (not shown in Table 5.8).