Assurance de qualité pour le cancer rectal – phase 2 ...

46 PROCARE – phase 2 KCE reports 81Figure 12. Per-centre-analysis (n = 124) of APR and Hartmann’s procedure(administrative cohort) $ .100350903008070250Proportion (%)60504030200150100Number of patients (N)20105000$ The weighted mean is presented with a red bar, the unweighted mean is presented with a bluehorizontal line. The grey bars represent the QI value per centre, while the blue dots representthe number of patients per centre. These results are preliminary, and cannot be used to judge thequality of care.Proportion of patients with stoma 1 year after sphincter-sparingsurgeryDEFINITIONNumerator: all patients with RC undergoing sphincter-sparing radical surgery with orwithout a temporary stoma at primary resective surgery, and still having this stoma 1year after surgery.Denominator: all patients with RC undergoing sphincter-sparing radical surgery with orwithout a temporary stoma.Exclusion:• patients not undergoing sphincter-sparing radical surgery• patients dying within one year after sphincter-sparing surgeryRESULTSDue to variable follow-up dates in the PROCARE database and a too unspecific variablein the data entry, a calculation at 1 year of this QI is impossible. Therefore, the QI is notmeasurable for the prospective cohort at present.In the administrative cohort, 3692 patients were identified undergoing sphincter-sparingsurgery (SSO) (no information was available for 78 patients) (Table 35). Of these, 1504patients had stoma surgery or the use of stoma material within one year after SSO.Within one year after SSO, 194 of these 1468 patients died. Of the remaining 1310patients, no information was available on stoma closure or the use of stoma material for217 patients (total missings: 295/7074, 4%). Of the 1093 patients with availableinformation (denominator), 292 still had a stoma after 1 year (27%).Importantly, based on the administrative codes for stoma material, it is impossible todistinguish patients with an ileo/colostomy from patients with a urostomy. Therefore,the result may be slightly overestimated.