5 results on '"Fields, Adam"'
Search Results
2. The Effect of Facility Volume on Survival Following Proctectomy for Rectal Cancer.
- Author
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Welten, Vanessa M., Wanis, Kerollos N., Madenci, Arin L., Fields, Adam C., Lu, Pamela W., Malizia, Robert A., Yoo, James, Goldberg, Joel E., Irani, Jennifer L., Bleday, Ronald, and Melnitchouk, Nelya
- Subjects
RECTAL cancer ,ONCOLOGIC surgery ,COLORECTAL cancer ,NEOADJUVANT chemotherapy ,OVERALL survival ,HOSPITAL patients - Abstract
Background: Prior studies assessing colorectal cancer survival have reported better outcomes when operations are performed at high-volume centers. These studies have largely been cross-sectional, making it difficult to interpret their estimates. We aimed to assess the effect of facility volume on survival following proctectomy for rectal cancer. Methods: Using data from the National Cancer Database, we included all patients with complete baseline information who underwent proctectomy for non-metastatic rectal cancer between 2004 and 2016. Facility volume was defined as the number of rectal cancer cases managed at the treating center in the calendar year prior to the patient's surgery. Overall survival estimates were obtained for facility volumes ranging from 10 to 100 cases/year. Follow-up began on the day of surgery and continued until loss to follow-up or death. Results: A total of 52,822 patients were eligible. Patients operated on at hospitals with volumes of 10, 30, and 50 cases/year had similar distributions of grade, clinical stage, and neoadjuvant therapies. 1-, 3-, and 5-year survival all improved with increasing facility volume. One-year survival was 94.0% (95% CI: 93.7, 94.3) for hospitals that performed 10 cases/year, 94.5% (95% CI: 94.2, 94.7) for 30 cases/year, and 94.8% (95% CI: 94.5, 95.0) for 50 cases/year. Five-year survival was 68.9% (95% CI: 68.0, 69.7) for hospitals that performed 10 cases/year, 70.8% (95% CI: 70.1, 71.5) for 30 cases/year, and 72.0% (95% CI: 71.2, 72.8) for 50 cases/year. Conclusions: Treatment at a higher volume facility results in improved survival following proctectomy for rectal cancer, though the small benefits are less profound than previously reported. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
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3. Barriers to Evidence-Based Colorectal Cancer Care in Ukraine.
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Lu, Pamela W., Semeniv, Solomiia, Shabat, Galyna, Welten, Vanessa, Pylypchuk, Volodymyr I., Galyuk, Volodymyr, Fields, Adam C., and Melnitchouk, Nelya
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COLORECTAL cancer ,CANCER treatment ,MEDICAL personnel ,TRANSLATING & interpreting ,PHYSICIANS - Abstract
Background: The incidence of colorectal cancer (CRC) is increasing in many low- to middle-income countries, including Ukraine. Ukraine reports high mortality rates in CRC patients. To identify potential areas for targeted interventions to improve CRC care in Ukraine, we investigated Ukrainian clinician perspectives on evidence-based CRC treatment guidelines. Methods: An explanatory sequential mixed-methods study design was used. A survey was administered to attendees of a regional surgical conference. Semi-structured interviews were subsequently performed with practicing clinicians in Ukraine. Interviews were coded to identify prominent themes. Results: Quantitative: 105 clinicians completed the survey. 76% of respondents reported using guidelines in daily practice. Lack of English proficiency was cited by 28.6% of respondents as a barrier to guideline use. Improved knowledge and additional financial resources were reported as factors that would be helpful in providing evidence-based care. Quantitative: 15 clinicians were interviewed. Two major themes were identified: limitations in access to the medical literature resources (language barriers and financial barriers), and sense of clinician initiative and willingness to learn despite hardships. Conclusions: Clinicians in Ukraine have positive perspectives on utilization of evidence-based CRC treatment guidelines. However, they face major barriers in accessing resources needed to keep up-to-date on the current literature. Fortunately, there exists both willingness and initiative on the clinician level to pursue continuing education. Efforts should be made on the international society level to improve open-access and foreign language translation availability to support physicians in Ukraine and other low- to middle-income countries. [ABSTRACT FROM AUTHOR]
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- 2021
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- View/download PDF
4. The Current Landscape of Staging and Treatment of Colorectal Cancer in a Region of Ukraine: a Mixed Methods Study.
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Lu, Pamela W., Shabat, Galyna, Semeniv, Solomiia, Fedorkiv, Maryana, Fields, Adam C., Lyu, Heather G., Beznosenko, Andriy, Davids, Jennifer S., and Melnitchouk, Nelya
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COLORECTAL cancer ,ADJUVANT chemotherapy ,CANCER treatment ,PATIENT care ,ONCOLOGISTS ,COLECTOMY ,RECTAL surgery - Abstract
Background: In Ukraine, the 1-year mortality for colorectal cancer is much higher than that seen in high-income countries. We investigated practice patterns of colorectal cancer treatment in a region of Ukraine to account for high mortality rates. Methods: An explanatory sequential mixed methods design was used. Data from patients who underwent surgery for colorectal cancer in Ivano-Frankivsk from 2011 to 2015 were collected via retrospective chart review, and descriptive statistics were calculated. Semi-structured interviews were performed with local practicing surgeons and oncologists until thematic saturation was reached. Results: A total of 960 patients who underwent surgery were identified in the Ivano-Frankivsk region with colon (689) or rectal (271) cancer. 11.7% of patients underwent preoperative CT of the abdomen and pelvis, and only 1.7% underwent CT of the chest. 4.1% of patients underwent a complete preoperative colonoscopy, while 31.0% had incomplete colonoscopies. Postoperatively, 31.1% of patients with stage II colon cancer and 43.9% of patients with stage III colon cancer underwent adjuvant chemotherapy. For patients with stage II and III rectal cancers, 20.9% and 33.3% underwent chemotherapy, while 68.4% and 66.7% underwent radiation therapy, respectively. Fifteen physicians completed interviews. Two major themes emerged regarding physician perceptions on providing colorectal cancer care: lack of resources and systems level issues negatively impacting patient care. Conclusion: In this region in Ukraine, staging practices for colorectal malignancies are inconsistent and inadequate, and adjuvant treatments are varied. This is likely attributable to the lack of resources facing providers and the prohibitively high cost of care to patients. [ABSTRACT FROM AUTHOR]
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- 2021
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5. The Distribution of Colorectal Surgeons in the United States.
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Lu, Pamela W., McCarty, Justin C., Fields, Adam C., Azzeh, Mahmoud, Goldberg, Joel E., Irani, Jennifer, Bleday, Ronald, and Melnitchouk, Nelya
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SURGEONS , *SURGICAL excision , *COLON cancer , *PROCTOLOGY , *ONCOLOGIC surgery - Abstract
Surgical resection is a mainstay of colorectal cancer treatment, and prior studies have shown improved outcomes in patients undergoing surgery for colorectal cancer by colorectal surgical specialists compared with nonspecialized surgeons. Here, we examine the geographic distribution of colorectal surgeons in the United States and its relationship with sociodemographic characteristics of the served population. The Area Health Resource File from 2017 to 2018 was used to identify the number and location of colorectal surgeons practicing throughout the United States and sociodemographic characteristics at the county and hospital referral region (HRR) level. The main outcomes of interest were the density of colorectal surgeons per 100,000 population and associations with sociodemographic characteristics at the county and HRR level based on multivariable linear regression. In multivariable analysis, regions with higher proportion of nonwhite individuals and college-educated individuals had significantly more colorectal surgeons per 100,000 population, whereas regions with higher proportions of uninsured individuals had significantly fewer colorectal surgeons per 100,000 population at both the county and HRR levels. Geographic and sociodemographic variability exists in the distribution of colorectal surgeons in the United States. Such variability may be contributing to disparities in access to specialized colorectal care. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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