Table 1 Zichtbare Zorg indicators for 2011 translated from Dutch to English

Numerator

Number of surgical resections of colorectal carcinomas located in colon or rectum (only count resections for primary carcinomas)

for which data has been submitted to the Dutch Surgical Colorectal Audit

Denominator

Number of surgical resections of colorectal carcinomas located in colon or rectum (only count resections for primary carcinomas)

Inclusion

Primary carcinomas

Exclusion

Recurrent colorectal carcinomas; TEM-resection (transanal endoscopic microsurgery)

2.

Number of lymph nodes examined after resection (Process)

Numerator

Number of patients who had 10 or more lymph nodes examined after resection of a primary colonic carcinoma

Denominator

Number of patients who underwent resection of a primary colonic carcinoma

Inclusion

All primary carcinomas, for which a part of the colon has been resected via open or laparoscopic surgery

Exclusion

1) patients who had a ‘resection’ via colonoscopy; 2) patients with previous radiotherapy; 3) patients with a recurrent carcinoma

3.

Patients with rectum carcinoma discussed in multidisciplinary meeting before surgery (Process)

Numerator

Number of patients with rectum carcinoma who have been discussed in a multidisciplinary meeting before the surgery

Denominator

Number of patients with rectum carcinoma operated in reporting year

Inclusion

All patients who underwent a resection of rectum due to a primary rectum carcinoma in the reporting year, via open or

laparoscopic surgery

Exclusion

TEM-resections and recurrent rectum carcinoma

4.

Preoperative imaging colon (Process)

Numerator

Number of patients with diagnosed colorectal carcinoma which has been resected electively en whose colon has been imaged

completely before the surgery

Denominator

Number of patients with diagnosed colorectal carcinoma which has been resected electively

Inclusion

All primary carcinomas, for which a part of the colon has been resected via open or laparoscopic surgery

Exclusion

1) patients who had a ‘resection’ via colonoscopy; 2) patients with previous radiotherapy; 3) patients with a recurrent carcinoma

5.

Adjuvant chemotherapy colonic carcinoma (Process)

Numerator 5a

Number of patients < 75 years old with a resected stage III (N1-2 M0) colonic carcinoma who received adjuvant chemotherapy

Denominator 5a

Number of patients < 75 years old with a resected stage III colonic carcinoma

Numerator 5b

Number of patients ≥ 75 years old with a resected stage III (N1-2 M0) colonic carcinoma who received adjuvant chemotherapy

Denominator 5b

Number of patients ≥ 75 years old with a resected stage III colonic carcinoma

Inclusion

All primary carcinomas, for which a part of the colon has been resected via open or laparoscopic surgery, and which have been

classified as stage III in an postoperative pathology examination

Exclusion

1) patients who had a ‘resection’ via colonoscopy; 2) patients with a recurrent carcinoma

6.

CRM rectum carcinoma (6a: Process, 6b: Outcome)

Numerator 6a

Number of patients with a resected primary rectum carcinoma for which the CRM (circumferential resection margin) has been

included in the pathology report and registered in the DSCA

Denominator 6a

Number of patients with a resected primary rectum carcinoma

Numerator 6b

Number of patients with rectum carcinoma with a CRM of 1 mm or less (tumor positive)

Denominator 6b

Number of patients with a resected primary rectum carcinoma

Inclusion

All patients who underwent a resection of rectum due to a primary rectum carcinoma in the reporting year, via open or

laparoscopic surgery

Exclusion

TEM-resections and recurrent rectum carcinoma

7.

Preoperative radiotherapy rectum carcinoma (Process)

Numerator

Number of patients with T3 or T4 rectum carcinoma who received preoperative radiotherapy

Denominator

Number of patients with T3 or T4 rectum carcinoma

Inclusion

-

Exclusion

-

8.

Volume (8a: Structure, 8b: Process)

Indicator 8a

How many surgeons does the team include and how many of these surgeons carry out resections on primary colonic carcinoma

patients?

Indicator 8b

Number of resections of primary colonic carcinomas

Inclusion

-

Exclusion

-