patients with cancer and the noncancer control population, a chi-square test was performed. Univariate logistic regression was used to determine patient and disease characteristics associated with the ordering of imaging. For determination of the attribute
Search Results
Arif Kamal, Tian Zhang, Steve Power, and P. Kelly Marcom
Lindsay M. Sabik, Kirsten Y. Eom, Zhaojun Sun, Jessica S. Merlin, Hailey W. Bulls, Patience Moyo, Jennifer A. Pruskowski, G.J. van Londen, Margaret Rosenzweig, and Yael Schenker
cancer diagnosis using chi-square tests. We then estimated multivariable logistic regression models to assess the association of patient characteristics, previous opioid receipt, treatment category, and year of diagnosis with receipt of an opioid
Emily C. Harrold, Ahmad F. Idris, Niamh M. Keegan, Lynda Corrigan, Min Yuen Teo, Martin O’Donnell, Sean Tee Lim, Eimear Duff, Dearbhaile M. O’Donnell, M. John Kennedy, Sue Sukor, Cliona Grant, David G. Gallagher, Sonya Collier, Tara Kingston, Ann Marie O’Dwyer, and Sinead Cuffe
independent predictors of insomnia syndrome. Results Demographic and Clinical Characteristics Of the 337 patients invited to participate, 87% consented to study inclusion (n=294); 12 declined without explanation, 15 were too unwell to participate, 8 declined
into clinical care paths. Further, cancer treatment is becoming increasingly personalized to the patient and tumor characteristics, thus increasing the complexity of decision-making. Methods: We developed a method to model guideline recommendations
Nalan Nese, Ruta Gupta, Matthew H. T. Bui, and Mahul B. Amin
Edited by Kerrin G. Robinson
Carcinoma in situ (CIS) of the urinary bladder is defined as a flat lesion comprising of cytologically malignant cells which may involve either full or partial thickness of the urothelium. De novo CIS constitutes less than 3% of all urothelial neoplasms; however, CIS detected concurrently or secondarily during follow-up of urothelial carcinoma constitutes 45% and 90%, respectively, of bladder cancer. CIS is noted predominantly in male smokers in the sixth or seventh decade. Patients may present with dysuria, nocturia, and urinary frequency and urgency with microscopic hematuria. Cystoscopic findings may range from unremarkable to erythema or edema. Urine cytology is an important diagnostic tool. Cellular anaplasia, loss of polarity, discohesion, nuclear enlargement, hyperchromasia, pleomorphism, and atypical mitoses are the histopathologic hallmarks of CIS. Extensive denud ation of the urothelium, monomorphic appearance of the neoplastic cells, inflammatory atypia, radiation induced nuclear smudging, multinucleation, and pagetoid spread of CIS may cause diagnostic difficulties. Together with clinical and morphologic correlation, immunostaining with CK 20, p53 (full thickness), and CD44 (absence of staining) may help accurately diagnose CIS. Fluorescent in situ hybridization analysis of voided urine for amplification of chromosomes 3, 7, and 17 and deletion of 9p has high sensitivity and specificity for diagnosing CIS in surveillance cases. Several other molecular markers, such as NMP 22 and BTA, are under evaluation or used variably in clinical pathology. Intravesical bacillus Calmette-Guerin (BCG) instillation is considered the preferred treatment, with radical cystectomy being offered to refractory cases. Chemotherapy, α-interferon, and photodynamic therapy are other modalities that can be considered in BCG-refractory cases. Multifocality, involvement of prostatic urethra, and response to BCG remain the most important prognostic factors, although newer molecular markers are being evaluated for this entity. Patient outcome varies based on whether it is de novo development or diagnosed secondary to prior or concomitant papillary bladder cancer. From a clinical perspective, the principal determinants of outcome are extent of disease, involvement of prostatic urethra, response to therapy, and time to recurrence.
Ran Jin, Neil Accortt, Darcie Sandschafer, Tatiana Lawrence, and Reshma Mahtani
Kah Poh Loh, Maya Abdallah, Meng-Shiou Shieh, Mihaela S. Stefan, Penelope S. Pekow, Peter K. Lindenauer, Supriya G. Mohile, Dilip Babu, and Tara Lagu
are reliably coded. Patient and Clinical Characteristics We collected demographics including age, sex, race, insurance provider, comorbidities (modified combined comorbidity score derived from the Elixhauser and Charlson comorbidity index
Matthew P. Banegas, Linda C. Harlan, Bhupinder Mann, and K. Robin Yabroff
regions. Currently, SEER covers approximately 28% of the US population. 7 Information for each patient in SEER is primarily obtained from hospital records and includes tumor characteristics, treatment, and select demographic characteristics. Given that
Brooke E. Wilson, Michelle B. Nadler, Alexandra Desnoyers, and Eitan Amir
anticancer therapy before documenting an event of interest can all result in informative censoring. 3 Differential censoring between the experimental and control arms may also introduce bias, especially if it results in differences in patient characteristics
Stephen J. Bagley, Suzanna Talento, Nandita Mitra, Neal J. Meropol, Roger B. Cohen, Corey J. Langer, and Anil Vachani
mortality data with results from published literature and the SEER database. Flatiron’s mortality data are estimated to have a sensitivity of 85% to 90%, specificity of 97% to 98%, and accuracy of 95% to 97%. 15 Baseline Characteristics Demographic and
