scholarly journals Role of palliative radiotherapy in unresectable intrahepatic cholangiocarcinoma: population-based analysis with propensity score matching

2018 ◽  
Vol Volume 10 ◽  
pp. 1497-1506 ◽  
Author(s):  
Feng Shao ◽  
Wei Qi ◽  
Fu Tao Meng ◽  
Lujun Qiu ◽  
Qiang Huang
Author(s):  
Aglaia Schiza ◽  
Davide Mauri ◽  
Irma Fredriksson ◽  
Anna-Karin Wennstig ◽  
Antonios Valachis

Abstract Purpose There are conflicting results on the potential role of HER2-status on the efficacy of aromatase inhibitors (AIs) and tamoxifen (TAM) in patients with hormone receptor (HR)-positive breast cancer (BC). The purpose of this population-based cohort study was to investigate the potential benefit of AIs compared to TAM as adjuvant therapy in postmenopausal BC patients by HER2-status in the era of modern therapy with HER2-blockade. Methods A population-based cohort study was performed including all postmenopausal women diagnosed with HR-positive BC without distant metastasis between 2007 and 2012 in three healthcare regions in Sweden. We analyzed the breast cancer-specific survival (BCSS) and overall survival (OS) in two distinct cohorts (HER2-negative, HER2-positive) based on the type of endocrine therapy (ET) used. A propensity score matching was performed separately in the HER2-negative and HER2-positive cohorts, respectively. Results After propensity score matching, 4368 patients with HER2-negative and 214 patients with HER2-positive BC were available for analysis. In the HER2-negative cohort, an improved BCSS [Hazard Ratio (HR): 0.51; 95% confidence interval (CI): 0.34–0.77, p value < 0.001] and a trend toward improved OS (HR: 0.66; 95% CI: 0.41–1.08, p value = 0.093) in favor of AI-based therapy was observed. In the HER2-positive cohort, no statistically significant difference between AI-based ET and TAM was found in terms of either BCSS or OS, although the direction of HR was similar as in the HER2-negative cohort (HR for BCSS: 0.84; 95% CI: 0.14–5.04, p = 0.849; HR for OS: 0.62; 95% CI: 0.10–3.38, p = 0.345). Conclusion Our study results, based on propensity-matched cohorts, did not support any predictive value of HER2-status on endocrine therapy in postmenopausal BC patients. AI-based ET remains the treatment of choice for postmenopausal BC patients with HR-positive disease in the modern era of HER2-directed therapy irrespective of HER2-status.


2019 ◽  
Vol 20 (2) ◽  
pp. 264-281 ◽  
Author(s):  
Viktoria Goebel

PurposeThe purpose of this paper is to investigate the drivers for voluntary intellectual capital (IC) reporting based on agency theory. This study responds to calls for critical investigations of IC reporting utilising Goebel’s (2015a) IC measuring approach to investigate the role of IC value and mispricing for IC reporting.Design/methodology/approachA mandatory management report offers a unique research setting in Germany. The content analysis results of 428 German management reports are used in a regression analysis with leverage, ownership diffusion, IC value and mispricing. Additionally, a propensity score matching approach examines the relationship between IC reporting and IC value.FindingsThe regression results show that companies use voluntary IC reporting to encounter mispricing. IC reporting is negatively associated with leverage, whereas ownership diffusion and IC value show no significant results. The propensity score matching approach is also not significant.Research limitations/implicationsThis study contributes to strengthening and testing agency theory for IC reporting. As mispricing is identified to play an important role for IC reporting, IC research should account for mispricing.Practical implicationsThe findings suggest to reopen a discussion on the declared aims of the German management report and the international integrated reporting model to provide information on value creation, as IC value shows no link to IC reporting.Originality/valueThis study innovatively links IC reporting to IC value and mispricing to investigate drivers for voluntary IC reporting.


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