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| Name | Class |
|---|---|
| National Natural Science Foundation of China | OTHER_GOV |
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The National Quality Forum has endorsed at least 12 lymph node yield (LNY) as a surgical quality indicator in colorectal cancer (CRC), but the prognostic value of adequate lymphadenectomy has rarely been investigated for CRC patients with distant metastatic disease.
Data on CRC patients with synchronous liver metastasis (LM) were derived from the US Surveillance, Epidemiology, and End Results (SEER) and a Chinese registry (from two Chinese tertiary centers: The Second Affiliated Hospital of Harbin Medical University and National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College) between January 2010 and December 2017. Individual level data on patients with incident CRC were consecutively collected in both registries. The primary tumor site was divided into three subsites according to International Classification of Diseases for Oncology (ICD-O-3) topography codes: proximal colon (C18.0, C18.1, C18.2, C18.3 and C18.4), distal colon (C18.5, C18.6, C18.7) and rectum (C19.9 and C20.9). The synchronous LM were identified by imaging or histopathological examinations. Synchronous LM refers to liver lesions found within 6 months after the diagnosis of primary CRC. Patients were excluded if they did not undergo surgery for CRC, did not have data on number of LNs retrieved and their survival status was unknown.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| SEER database | Data on CRC patients with synchronous liver metastasis (LM) were derived from the US Surveillance, Epidemiology, and End Results (SEER) between January 2010 and December 2017. |
| |
| Chinese cohort | Data on CRC patients with synchronous liver metastasis (LM) were derived from two Chinese tertiary centers: The Second Affiliated Hospital of Harbin Medical University and National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College between January 2010 and December 2017. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| lymph node yield | Other | We recorded the number of lymph nodes dissected during surgery in patients with colorectal cancer |
|
| Measure | Description | Time Frame |
|---|---|---|
| cancer specific survival | The primary outcome was cancer specific survival (CSS), which was defined as the time interval from the synchronous LM diagnosis until cancer specific death or the end of follow-up in Chinese registry, and the CSS was defined using the SEER cause-of-death codes in SEER registry | 2010.01-2017.12 |
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Inclusion Criteria:
Exclusion Criteria:
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the US Surveillance, Epidemiology, and End Results (SEER) and a Chinese registry (from two Chinese tertiary centers: The Second Affiliated Hospital of Harbin Medical University and National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College) between January 2010 and December 2017
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Ethics and ethics of the Second Affiliated Hospital of Harbin Medical University | Harbin | Heilongjiang | 150000 | China |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 29617544 | Background | Doll KM, Rademaker A, Sosa JA. Practical Guide to Surgical Data Sets: Surveillance, Epidemiology, and End Results (SEER) Database. JAMA Surg. 2018 Jun 1;153(6):588-589. doi: 10.1001/jamasurg.2018.0501. No abstract available. | |
| 31922529 | Background | Thomas L, Li F, Pencina M. Using Propensity Score Methods to Create Target Populations in Observational Clinical Research. JAMA. 2020 Feb 4;323(5):466-467. doi: 10.1001/jama.2019.21558. No abstract available. |
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The data involves the relevant personal privacy information of the patient
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| 37037584 | Derived | Jiao S, Guan X, Zhang W, Wei R, Wang G, Wang X. Prognostic impact of increased lymph node yield in colorectal cancer patients with synchronous liver metastasis: a population-based retrospective study of the US database and a Chinese registry. Int J Surg. 2023 Jul 1;109(7):1932-1940. doi: 10.1097/JS9.0000000000000244. |
| ID | Term |
|---|---|
| D015179 | Colorectal Neoplasms |
| ID | Term |
|---|---|
| D007414 | Intestinal Neoplasms |
| D005770 | Gastrointestinal Neoplasms |
| D004067 | Digestive System Neoplasms |
| D009371 | Neoplasms by Site |
| D009369 | Neoplasms |
| D004066 | Digestive System Diseases |
| D005767 | Gastrointestinal Diseases |
| D003108 | Colonic Diseases |
| D007410 | Intestinal Diseases |
| D012002 | Rectal Diseases |
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