Objective: This nationwide population-based study aimed to report postoperative morbidity and mortality after esophagectomy and gastrectomy in the Netherlands according to the definitions of the Esophagectomy Complications Consensus Group (ECCG). Background: To standardize international outcome reporting in esophageal surgery, the ECCG developed a standardized outcomes set. Methods: For this national cohort study, all patients undergoing esophagectomy or gastrectomy for cancer between 2016 and 2017 were selected from the Dutch Upper gastrointestinal Cancer Audit. In a random sample of hospitals, data completeness and accuracy were validated by reabstraction of the data. The investigated outcomes in the present study were postoperative complications, major complications (Clavien-Dindo grade !III), and 30-day mortality, according to definitions of the ECCG. Results: A total of 2545 patients from 22 hospitals were included. The completeness of the Dutch Upper gastrointestinal Cancer Audit was estimated at 99.8%. Data accuracy on different items was 94% to 100%. After esophagectomy, 1046 of 1617 patients (65%) had a postoperative complication including 468 patients (29%) with a major complication. Most common complications were pneumonia (21%), esophago-enteric leak from anastomosis, staple line or localized conduit necrosis (19%), and atrial dysrhythmia (15%). The 30-day mortality was 1.7%. After gastrectomy, 397 of 928 patients (42%) had a postoperative complication including 180 patients (19%) with a major complication. Most common complications were pneumonia (12%), esophago-enteric leak from anastomosis, staple line or localized conduit necrosis (9%), and acute delirium (5%). The 30-day mortality was 4.4%. Conclusions: Reporting complications according to the ECCG platform is feasible in the Netherlands and facilitates international benchmarking.

Objective: The aim of this study was to investigate the association between short-term outcome indicators and long-term survival after esophagogastric resections. Summary Background Data: Short-term outcome indicators are often used to compare performance between care providers. Some short-term outcome indicators concern the direct quality of care, that is, complications, others are used because they are expected to be associated with long-term outcomes. Method: For this national cohort study, all patients who underwent esophagectomy or gastrectomy for cancer with curative intent between 2011 and 2016 and were registered in the Dutch Upper gastrointestinal Cancer Audit were included. Primary outcome was conditional survival (under the condition of surviving the first postoperative 30 days and hospital admission). Cox regression modeling was used to study the independent association between “textbook outcome” with survival. “Textbook outcome,” a composite quality indicator, was defined as a pathological complete resection with at least 15 retrieved lymph nodes, an uneventful postoperative course, and no hospital readmission. Results: In total, 4414 and 2943 patients with esophageal or gastric cancer, respectively, were included. The 1-, 2-, and 3-year overall survival rates were 76%, 62%, and 54%, and 71%, 56%, and 49% for esophageal and gastric cancer, respectively. Textbook outcome was achieved in 33% and 35% of patients respectively. “Textbook outcome” was independently associated with longer conditional survival [hazard ratio: 0.75 (95% confidence interval, 0.68–0.84) and 0.69 (0.60–0.79), respectively]. Conclusion: This study showed that the short-term outcome indicator textbook outcome is associated with long-term overall survival and therefore may accentuate the importance of using these indicators in clinical audits.

Objective: To evaluate changes in treatment and outcomes of esophagogastric cancer surgery after introduction of the DUCA. In addition, the presence of risk-averse behavior was assessed. Summary of Background Data: Clinical auditing is seen as an important quality improvement tool; however, its long-term efficacy remains largely unknown. In addition, critics claim that enhancements result from risk-averse behavior rather than positive effects of auditing. Methods: DUCA data were used from registration start (1-1-2011) until 31-12-2018. Trends in patient, tumor, hospital and treatment characteristics were univariably assessed. Trends in short-term outcomes were investigated using multilevel multivariable logistic regression. Presence of risk aversion was described by the corrected proportion of patients undergoing surgery, using data from the Netherlands Cancer Registry. To evaluate the impact of centralization on time trends identified, the association between hospital volume and outcomes was investigated. Results: This study included 6172 patients with esophageal and 3,690 with gastric cancer who underwent surgery. Pathological outcomes (lymph node yield, radicality) improved and futile surgery decreased over the years. In-hospital/30-day mortality decreased for esophagectomy (4.2% to 2.5%) and for gastrectomy (7.1% to 4.3%). Reinterventions, (minor) complications and readmissions increased. Risk aversion appeared absent. Between 2011-2018, annual median hospital volumes increased from 38 to 53 for esophagectomy and from 14 to 29 for gastrectomy. Higher hospital volumes were associated with several improved outcomes measures. Conclusions: During 8 years of auditing, outcomes improved, with no signs of risk-averse behavior. These improvements occurred in parallel with centralization. Feedback on postoperative complications remains the focus of the DUCA.

BackgroundClinical auditing is an emerging instrument for quality assessment and improvement. Moreover, clinical registries facilitate medical research as they provide ‘real world’ data. It is important that entered data are robust and reliable. The aim of this study was to describe the evolving procedure and results of data verification within the Dutch Institute for Clinical Auditing (DICA).MethodsData verification performed on several (disease‐specific) clinical registries between 2013 and 2015 was evaluated. Sign‐up, sample size and process of verification were described. For each procedure, hospitals were visited by external data managers to verify registered data. Outcomes of data verification were completeness and accuracy. An assessment of the quality of data was given per registry, for each participating hospital. Using descriptive statistics, analyses were performed for different sections within the individual registries.ResultsSeven of the 21 registries were verified, involving 174 visits to hospital departments. A step‐by‐step description of the data verification process was provided. Completeness of data in the registries varied from 97·2 to 99·4 per cent. Accuracy of data ranged from 88·2 to 100 per cent. Most discrepancies were observed for postoperative complications (0·7–7·5 per cent) and ASA classification (8·5–11·4 per cent). Data quality was assessed as ‘sufficient’ for 145 of the 174 hospital departments (83·3 per cent).ConclusionData verification revealed that the data entered in the observed DICA registries were complete and accurate.

Background: With increasing interest in organ-preserving strategies for potentially curable esophageal cancer, real-world data is needed to understand the impact of pathological tumor response after neoadjuvant chemoradiotherapy (CRT) on patient outcome. The objective of this study is to assess the association between pathological tumor response following CROSS neoadjuvant CRT and long-term overall survival (OS) in a nationwide cohort. Material and methods: All patients diagnosed in the Netherlands with potentially curable esophageal cancer between 2009 and 2017, and treated with neoadjuvant CRT followed by esophagectomy were included. Through record linkage with the nationwide Dutch Pathology Registry (PALGA), pathological data were obtained. The primary outcome was pathological tumor response based on ypTNM, classified into pathological complete response (ypT0N0) and incomplete responders (ypT0Nþ, ypTþN0, and ypTþNþ). Multivariable logistic and Cox regression models were used to identify predictors of pathological complete response (pCR) and survival. Results: A total of 4946 patients were included. Overall, 24% achieved pCR, with 19% in adenocarcinoma and 42% in squamous cell carcinoma. Patients with pCR had a better estimated 5-year OS compared to incomplete responders (62% vs. 38%, p< .001). Of the patients with incomplete response, ypTþNþ patients (32% of total population) had the lowest estimated 5-year OS rate, followed by ypT0Nþ and ypTþ N0 (22%, 47%, and 49%, respectively, p< .001). Adenocarcinoma, well to moderate differentiation, cT3-4, cNþ, signet ring cell differentiation and lymph node yield (15) were associated with lower likelihood of pCR. Conclusion:In this population-based study, pathological tumor response based on the ypTNM-stage was associated with different prognostic subgroups. A quarter of patients achieved ypT0N0 with favorable long-term survival, while one-third had an ypTþNþ response with very poor survival. The association between pathological tumor response and long-term survival could help in more accurate assessments of individual prognosis and treatment decisions.

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BackgroundFor esophageal cancer, the number of retrieved lymph nodes (LNs) is often used as a quality indicator. The aim of this study is to analyze the number of retrieved LNs in The Netherlands, assess factors associated with LN yield, and explore the association with short-term outcomes. This is a population-based study on lymph node retrieval in patients with esophageal cancer, presenting results from the Dutch Upper Gastrointestinal Cancer Audit.Study DesignFor this retrospective national cohort study, patients with esophageal carcinoma who underwent esophagectomy between 2011 and 2016 were included. The primary outcome was the number of retrieved LNs. Univariable and multivariable regression analyses were used to test for association with ≥ 15 LNs.Patients and Results3970 patients were included. Between 2011 and 2016, the median number of LNs increased from 15 to 20. Factors independently associated with ≥ 15 LNs were: 0–10 kg preoperative weight loss (versus: unknown weight loss, odds ratio [95% confidence interval]: 0.71 [0.57–0.88]), Charlson score 0 (versus: Charlson score 2: 0.76 [0.63–0.92]), cN2 category (reference: cN0, 1.32 [1.05–1.65]), no neoadjuvant therapy and neoadjuvant chemotherapy (reference: neoadjuvant chemoradiotherapy, 1.73 [1.29–2.32] and 2.15 [1.54–3.01]), minimally invasive transthoracic (reference: open transthoracic, 1.46 [1.15–1.85]), open transthoracic (versus open and minimally invasive transhiatal, 0.29 [0.23–0.36] and 0.43 [0.32–0.59]), hospital volume of 26–50 or > 50 resections/year (reference: 0–25, 1.94 [1.55–2.42] and 3.01 [2.36–3.83]), and year of surgery [reference: 2011, odds ratios (ORs) 1.48, 1.53, 2.28, 2.44, 2.54]. There was no association of ≥ 15 LNs with short-term outcomes.ConclusionsThe number of LNs retrieved increased between 2011 and 2016. Weight loss, Charlson score, cN category, neoadjuvant therapy, surgical approach, year of resection, and hospital volume were all associated with increased LN yield. Retrieval of ≥ 15 LNs was not associated with increased postoperative morbidity/mortality.Electronic supplementary materialThe online version of this article (10.1245/s10434-018-6396-7) contains supplementary material, which is available to authorized users.

Background: The Dutch Hepato Biliary Audit (DHBA) was initiated in 2013 to assess the national quality of liver surgery. This study aimed to describe the initiation and implementation of this audit along with an overview of the results and future perspectives. Methods: Registry of patients undergoing liver surgery for all primary and secondary liver tumors in the DHBA is mandatory. Weekly, benchmarked information on process and outcome measures is reported to surgical teams. In this study, the first results of patients with colorectal liver metastases were presented, including results of data verification.Results: Between 2014 and 2017, 6241 procedures were registered, including 4261 (68%) resections for colorectal liver metastases. For minor-and major liver resections for colorectal liver metastases, the median [interquartile range] hospital stay was 6 [4-8] and 8 [6-12] days, respectively. A postoperative complicated course (complication leading to >14 days of hospital stay, reintervention or death) occurred in 26% and 43% and the 30-day/in-hospital mortality was 1% and 4%, respectively. The completeness of data was 97%. In 3.6% of patients, a complicated postoperative course was erroneously omitted. Conclusion:Nationwide implementation of the DHBA has been successful. This was the first step in creating a complete evaluation of the quality of liver surgery.