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

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100 PROCARE <strong>–</strong> <strong>phase</strong> 2 KCE reports 81PROPORTION OF PATIENTS WITH LOCAL RECURRENCEMeasurement in prospective PROCARE database (Figure 22)In the hospital data section of the PROCARE data entry form, the variab<strong>le</strong> ‘AD_V111’ ischecked if the patient un<strong>de</strong>rwent <strong>rectal</strong> surgery. Variab<strong>le</strong> ‘SG_V216’ permits thedistinction between R0, R1 and R2 resections. However, the results of the pathologyreport and intra-operative tumour perforation are not taken into account in thisvariab<strong>le</strong>.Local recurrence is measured through variab<strong>le</strong> ‘FU_V139’ in the follow-up section ofthe data entry form. However, since the PROCARE registration started in January 2006,follow-up data are only availab<strong>le</strong> for a minority of patients at present.Up till now, the <strong>de</strong>fault value of variab<strong>le</strong> ‘FU_V139’ was ‘0’ (i.e. no local recurrence;however, missing values also received a value ‘0’), making it impossib<strong>le</strong> to distinguishabsence of local recurrence from missing values. However, in a random samp<strong>le</strong> of 20forms with a value ‘0’ for variab<strong>le</strong> ‘FU_V139’ only 1 missing value (5%) was found.Variab<strong>le</strong> ‘FU_V102’ enco<strong>de</strong>s the date of each follow-up visit, permitting to add a timedimension to this QI. Since this follow-up visit is not at the same time for each patient,it is impossib<strong>le</strong> to calculate an absolute local recurrence rate at 1 year after inci<strong>de</strong>ncedate. Therefore, a Kaplan-Meier analysis was used.Measurement in coup<strong>le</strong>d administrative databaseNo administrative co<strong>de</strong> exists for R0 resection or local recurrence.Figure 22. Algorithm for QI 1113 (PROCARE database).All patientsN=1071Follow- updataN=262R0(curative treated)Local recurrenceN=5Pyp-stage0-I-II-IIIN=788Type ofresection?N=233Localrecurrence?No local recurrenceORlocal recurrence=missing indatabaseN=228 98%Local recurrencePypstage?Follow-updata between 0and 12 months?R0 missing(curative treated:not known)N=21Localrecurrence?N=2No local recurrenceORlocal recurrence=missing indatabaseN=19 92%Pyp-csta<strong>de</strong>=IVorC-sta<strong>de</strong>=IVNo R0(not curative treated)Local recurrenceN=1N=130Pyp-stage=missingN=153No followdataN=526N=8Localrecurrence?No local recurrenceORlocal recurrence=missing indatabaseN=7 45%

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