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Statistics in Oncology

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https://www.readbyqxmd.com/read/28342433/-evaluation-of-the-degree-of-patient-information-to-be-included-in-the-home-based-palliative-care-program
#1
Ana María Tordable Ramírez
The fact of communicating to a patient his or her diagnosis when it is unfavourable, this becomes a really human issue. The bioethics and the legislation protect this right of information. The aim of this study is to evaluate the degree of information of patients when they are included in the home palliative care program. This is a quantitative, descriptive, retrospective and transversal study. The year of the study is 2012 in patients diagnosed with advanced terminal illnesses processes valued by the Team of Home Palliative Attention Support, of the North Welfare Direction of the Community of Madrid...
January 2017: Cuadernos de Bioética: Revista Oficial de la Asociación Española de Bioética y Ética Médica
https://www.readbyqxmd.com/read/28336202/medical-surgical-activity-and-the-current-state-of-training-of-urology-residents-in-spain-results-of-a-national-survey
#2
M E Rodríguez-Socarrás, J Gómez Rivas, M García-Sanz, L Pesquera, L Tortolero-Blanco, M Ciappara, A Melnick, J Colombo, G Patruno, Á Serrano-Pascual, J Bachiller-Burgos, J M Cozar-Olmo
OBJECTIVES: To determine the actual state of medical-surgical activity and training for urology residents in Spain. MATERIAL AND METHOD: We designed 2 anonymous surveys, which were uploaded with the Google Docs(©) tool so that the respondents could answer the surveys online. The online collection period was September 2015 to January 2016. The collected data were processing using the statistical programme IBM SPSS for Windows, Version 21.0 and the programme R version 3...
March 20, 2017: Actas Urologicas Españolas
https://www.readbyqxmd.com/read/28336185/self-expanding-metallic-stent-as-a-bridge-to-surgery-in-the-treatment-of-left-colon-cancer-obstruction-cost-benefit-analysis-and-oncologic-results
#3
Blas Flor-Lorente, Gloria Báguena, Matteo Frasson, Alvaro García-Granero, Andrés Cervantes, Vicente Sanchiz, Andres Peña, Alejandro Espí, Pedro Esclapez, Eduardo García-Granero
INTRODUCTION: The use of a self-expanding metallic stent as a bridge to surgery in acute malignant left colonic obstruction has been suggested as an alternative treatment to emergency surgery. The aim of the present study was to compare the morbi-mortality, cost-benefit and long-term oncological outcomes of both therapeutic options. METHODS: This is a prospective, comparative, controlled, non-randomized study (2005-2010) performed in a specialized unit. The study included 82 patients with left colon cancer obstruction treated by stent as a bridge to surgery (n=27) or emergency surgery (n=55) operated with local curative intention...
March 20, 2017: Cirugía Española
https://www.readbyqxmd.com/read/28328631/single-institution-review-of-patients-with-prior-breast-augmentation-undergoing-breast-conservation-therapy-for-breast-cancer
#4
Sangeetha Prabhakaran, Joshua B Elston, Amina Lleshi, Ambuj Kumar, Weihong Sun, Nazanin Khakpour, Deniz Dayicioglu
BACKGROUND: Increasing number of patients with preexisting breast implants desire breast conservation therapy for breast cancer. There is paucity of comparative data on tumor margins and re-excisions in these patients. High re-excision rates up to 25% have been reported in breast conservation therapy patients; efforts to obtain cosmesis and avoid implant rupture might increase this further. We analyzed tumor margins, re-excision rates, and recurrence in previously augmented versus non-augmented patients undergoing lumpectomy for breast cancer...
March 21, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28327973/modeling-individual-and-relative-accuracy-of-screening-tools-in-geriatric-oncology
#5
C A Bellera, F Artaud, M Rainfray, P L Soubeyran, S Mathoulin-Pélissier
Background: Classification probabilities reflect to what degree a screening test represents the true disease state and include true positive (TPF) and false positive fractions (FPF). With two tests, one can compare TPF and FPF using relative probabilities which offer advantages in terms of interpretation and statistical modeling. Our objective was to highlight how individual and relative TPF and FPF can be easily estimated and compared within a regression modeling framework. This allows the modeling of tests' accuracy while adjusting for multiple covariates, and thus provides valuable information in addition to the crude TPF and FPF...
February 21, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28327944/a-phase-2-randomized-double-blind-placebo-%C3%A2-controlled-study-of-chemo-immunotherapy-combination-using-motolimod-with-pegylated-liposomal-doxorubicin-in-recurrent-or-persistent-ovarian-cancer-a-gynecologic-oncology-group-partners-study
#6
B J Monk, M F Brady, C Aghajanian, H A Lankes, T Rizack, J Leach, J M Fowler, R Higgins, P Hanjani, M Morgan, R Edwards, W Bradley, T Kolevska, P Foukas, E Swisher, K S Anderson, R Gottardo, J K Bryan, M Newkirk, K L Manjarrez, R S Mannel, R M Hershberg, G Coukos
Background: A phase 2, randomized, placebo-controlled trial was conducted in women with recurrent epithelial ovarian carcinoma to evaluate the efficacy and safety of motolimod-a Toll-like receptor 8 (TLR8) agonist that stimulates robust innate immune responses-combined with pegylated liposomal doxorubicin (PLD), a chemotherapeutic that induces immunogenic cell death. Patients and methods: Women with ovarian, fallopian tube, or primary peritoneal carcinoma were randomized 1 : 1 to receive PLD in combination with blinded motolimod or placebo...
February 21, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28327466/regional-deep-hyperthermia-impact-of-observer-variability-in-ct-based-manual-tissue-segmentation-on-a-simulated-temperature-distribution
#7
Bassim Aklan, Josefin Hartmann, Diana Zink, Hadi Siavooshhaghighi, Ricarda Merten, Florian Putz, Oliver Ott, Rainer Fietkau, Christoph Bert
The aim of this study was to systematically investigate the influence of inter- and intra-observer segmentation variation of tumor and organs at risk on the simulated temperature coverage of the target. CT scans of six patients with tumors in the pelvic region acquired for radiotherapy treatment planning were used for the hyperthermia treatment planning. To study the effect of inter-observer variation, three observers manually segmented in the CT images of each patient the following structures: fat, muscle, bone and bladder...
March 22, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28327112/prognosis-of-ulcerative-colitis-colorectal-cancer-vs-sporadic-colorectal-cancer-propensity-score-matching-analysis
#8
Yoon Dae Han, Mahdi Hussain Al Bandar, Audrius Dulskas, Min Soo Cho, Hyuk Hur, Byung Soh Min, Kang Young Lee, Nam Kyu Kim
BACKGROUND: Ulcerative colitis (UC) harbours a high risk of UC-associated colorectal cancer (UCCC), which is important cause of morbidity and mortality in patients with inflammatory bowel disease. Overall Survival (OS) of patients with UCCC has not been addressed well in the literature. Thus, we compared oncologic outcome of UCCC and sporadic colorectal cancer (SCC) using propensity score matching analysis. METHODS: Propensity score matching was performed for 36 patients, a 1:1 matching method stratified into 18 in UCCC and 18 patients in SCC...
March 21, 2017: BMC Surgery
https://www.readbyqxmd.com/read/28326894/cost-comparison-of-laparoscopic-colectomy-versus-open-colectomy-in-colon-cancer
#9
Kathryn Fitch, Andrew Bochner, Deborah S Keller
BACKGROUND: Laparoscopic colectomy has been shown to be safe, oncologically comparable, and clinically beneficial over open colectomy for colon cancer, but utilization remains low. OBJECTIVES: To evaluate the cost of laparoscopic colectomy vs. open colectomy for colon cancer. METHODS: We conducted a retrospective claims data analysis using the 2012 and 2013 Truven Health Analytics MarketScan Commercial Claims and Encounter Database. The denominator population consisted of individuals who had commercial insurance coverage in all months of 2012 and >1 month in 2013 and pharmacy coverage throughout eligibility...
March 22, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28323656/tumor-margin-assessment-with-loupe-magnification-enables-greater-histological-clearance-of-facial-basal-cell-carcinomas-compared-with-clinical-examination-alone
#10
Conor M Sugrue, Niall McInerney, Cormac W Joyce, Jack L Kelly
BACKGROUND: Surgical excision of facial basal cell carcinomas (BCCs) is a balance between oncological clearance and conservation of cosmetic and functionally sensitive tissues. OBJECTIVE: To assess if loupe magnification (LM) can enhance the visual assessment of BCC tumor margins resulting in a greater histological clearance. METHODS AND MATERIALS: This prospective study randomized patients with primary facial BCCs into preoperative tumor margin assessment with LM (study group) or clinical examination alone (control group)...
March 17, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28314589/fgfr2-mutations-are-associated-with-poor-outcomes-in-endometrioid-endometrial-cancer-an-nrg-oncology-gynecologic-oncology-group-study
#11
Yvette W Jeske, Shamshad Ali, Sara A Byron, Feng Gao, Robert S Mannel, Rahel G Ghebre, Paul A DiSilvestro, Shashikant B Lele, Michael L Pearl, Amy P Schmidt, Heather A Lankes, Nilsa C Ramirez, Golnar Rasty, Matthew Powell, Paul J Goodfellow, Pamela M Pollock
PURPOSE: Activating FGFR2 mutations have been identified in ~10% of endometrioid endometrial cancers (ECs). We have previously reported that mutations in FGFR2 are associated with shorter disease free survival (DFS) in stage I/II EC patients. Here we sought to validate the prognostic importance of FGFR2 mutations in a large, multi-institutional patient cohort. METHODS: Tumors were collected as part of the GOG 210 clinical trial "Molecular Staging of Endometrial Cancer" where samples underwent rigorous pathological review and had more than three years of detailed clinical follow-up...
March 14, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28303586/estimation-of-treatment-effect-in-two-stage-confirmatory-oncology-trials-of-personalized-medicines
#12
Wen Li, Cong Chen, Xiaoyun Li, Robert A Beckman
A personalized medicine may benefit a subpopulation with certain predictive biomarker signatures or certain disease types. However, there is great uncertainty about drug activity in a subpopulation when designing a confirmatory trial in practice, and it is logical to take a two-stage approach with the study unless credible external information is available for decision-making purpose. The first stage deselects (or prunes) non-performing subpopulations at an interim analysis, and the second stage pools the remaining subpopulations in the final analysis...
March 17, 2017: Statistics in Medicine
https://www.readbyqxmd.com/read/28301278/comparison-of-onsite-versus-online-chart-reviews-as-part-of-the-american-college-of-radiation-oncology-accreditation-program
#13
Jaroslaw T Hepel, Dwight E Heron, Arno J Mundt, Catheryn Yashar, Steven Feigenberg, Gordon Koltis, William F Regine, Dheerendra Prasad, Shilpen Patel, Navesh Sharma, Mary Hebert, Norman Wallis, Michael Kuettel
PURPOSE: Accreditation based on peer review of professional standards of care is essential in ensuring quality and safety in administration of radiation therapy. Traditionally, medical chart reviews have been performed by a physical onsite visit. The American College of Radiation Oncology Accreditation Program has remodeled its process whereby electronic charts are reviewed remotely. METHODS: Twenty-eight radiation oncology practices undergoing accreditation had three charts per practice undergo both onsite and online review...
March 16, 2017: Journal of Oncology Practice
https://www.readbyqxmd.com/read/28297339/deformable-image-registration-and-interobserver-variation-in-contour-propagation-for-radiation-therapy-planning
#14
Adam C Riegel, Jeffrey G Antone, Honglai Zhang, Prachi Jain, Jagdeep Raince, Anthony Rea, Angelo M Bergamo, Ajay Kapur, Louis Potters
Deformable image registration (DIR) and interobserver variation inevitably introduce uncertainty into the treatment planning process. The purpose of the current work was to measure deformable image registration (DIR) errors and interobserver variability for regions of interest (ROIs) in the head and neck and pelvic regions. Measured uncertainties were combined to examine planning margin adequacy for contours propagated for adaptive therapy and to assess the trade-off of DIR and interobserver uncertainty in atlas-based automatic segmentation...
May 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28297338/epid-based-in-vivo-dosimetry-system-clinical-experience-and-results
#15
Sofia Celi, Emilie Costa, Claas Wessels, Alejandro Mazal, Alain Fourquet, Pascal Francois
Mandatory in several countries, in vivo dosimetry has been recognized as one of the next milestones in radiation oncology. Our department has implemented clinically an EPID based in vivo dosimetry system, EPIgray, by DOSISOFT S.A., since 2006. An analysis of the measurements per linac and energy over a two-year period was performed, which included a more detailed examination per technique and treatment site over a six-month period. A comparison of the treatment planning system doses and the doses estimated by EPIgray shows a mean of the differences of 1...
May 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28294341/reconstruction-of-uptake-patterns-in-pet-the-influence-of-regularizing-priors
#16
Elisabetta De Bernardi, Federico Fallanca, Luigi Gianolli, Maria Carla Gilardi, Valentino Bettinardi
PURPOSE: The effects of regularizing priors on the maximum likelihood (ML) reconstruction of activity patterns in Positron Emission Tomography (PET) was assessed. METHODS: Two edge-preserving priors (one originally proposed by Nuyts et al. and nowadays implemented and commercialized by General Electric Medical Systems as Q.Clear software, and a second one originally proposed by Rapisarda et al. and our group) were assessed and compared to a standard Ordered Subset (OS)-ML reconstruction, assumed as reference...
March 11, 2017: Medical Physics
https://www.readbyqxmd.com/read/28291912/improving-the-efficiency-of-breast-radiotherapy-treatment-planning-using-a-semi-automated-approach
#17
Robert A Mitchell, Philip Wai, Ruth Colgan, Anna M Kirby, Ellen M Donovan
OBJECTIVES: To reduce treatment planning times while maintaining plan quality through the introduction of semi-automated planning techniques for breast radiotherapy. METHODS: Automatic critical structure delineation was examined using the Smart Probabilistic Image Contouring Engine (SPICE) commercial autosegmentation software (Philips Radiation Oncology Systems, Fitchburg, WI) for a cohort of ten patients. Semiautomated planning was investigated by employing scripting in the treatment planning system to automate segment creation for breast step-and-shoot planning and create objectives for segment weight optimization; considerations were made for three different multileaf collimator (MLC) configurations...
January 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28289046/observational-study-of-the-development-and-evaluation-of-a-fertility-preservation-patient-decision-aid-for-teenage-and-adult-women-diagnosed-with-cancer-the-cancer-fertility-and-me-research-protocol
#18
G L Jones, J Hughes, N Mahmoodi, D Greenfield, G Brauten-Smith, J Skull, J Gath, D Yeomanson, E Baskind, J A Snowden, R M Jacques, G Velikova, K Collins, D Stark, R Phillips, S Lane, H L Bekker
INTRODUCTION: Women diagnosed with cancer and facing potentially sterilising cancer treatment have to make time-pressured decisions regarding fertility preservation with specialist fertility services while undergoing treatment of their cancer with oncology services. Oncologists identify a need for resources enabling them to support women's fertility preservation decisions more effectively; women report wanting more specialist information to make these decisions. The overall aim of the 'Cancer, Fertility and Me' study is to develop and evaluate a new evidence-based patient decision aid (PtDA) for women with any cancer considering fertility preservation to address this unmet need...
March 13, 2017: BMJ Open
https://www.readbyqxmd.com/read/28284185/a-survey-to-determine-usual-care-after-cancer-treatment-within-the-united-kingdom-national-health-service
#19
M Duncan, J Deane, P D White, D Ridge, R Roylance, A Korszun, T Chalder, K S Bhui, M A Thaha, L Bourke
BACKGROUND: Approximately one third of cancer survivors in the United Kingdom face ongoing and debilitating psychological and physical symptoms related to poor quality of life. Very little is known about current post-cancer treatment services. METHODS: Oncology healthcare professionals (HCPs) were invited to take part in a survey, which gathered both quantitative and free text data about the content and delivery of cancer aftercare and patient needs. Analysis involved descriptive statistics and content analysis...
March 11, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28281911/comparing-oncology-clinical-programs-by-use-of-innovative-designs-and-expected-net-present-value-optimization-which-adaptive-approach-leads-to-the-best-result
#20
Tom Parke, Olga Marchenko, Vladimir Anisimov, Anastasia Ivanova, Christopher Jennison, Inna Perevozskaya, Guochen Song
Designing an oncology clinical program is more challenging than designing a single study. The standard approaches have been proven to be not very successful during the last decade; the failure rate of Phase 2 and Phase 3 trials in oncology remains high. Improving a development strategy by applying innovative statistical methods is one of the major objectives of a drug development process. The oncology sub-team on Adaptive Program under the Drug Information Association Adaptive Design Scientific Working Group (DIA ADSWG) evaluated hypothetical oncology programs with two competing treatments and published the work in the Therapeutic Innovation and Regulatory Science journal in January 2014...
February 7, 2017: Journal of Biopharmaceutical Statistics
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