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11.
Annual data for forty-eight states are used to account for changes in the composition of input and output aggregates over space and time, and thereby to obtain new evidence on changes in inputs, outputs, and productivity in U.S. agriculture. The measures change significantly when we use state-specific rather than national prices and when we allow for changes in the composition of the aggregates, especially of labor and capital inputs. We compare our estimates and those reported by Ball et al. ( American Journal of Agricultural Economics 81(1999):164–79). The national estimates are similar but substantial differences are found in state-level productivity growth.  相似文献   
12.
13.
Aim: To assess the cost-effectiveness in Canada of atezolizumab compared with docetaxel or nivolumab for the treatment of advanced NSCLC after first-line platinum-doublet chemotherapy.

Materials and methods: A three-state partitioned-survival model was developed. Clinical inputs were obtained from the phase III OAK trial comparing atezolizumab with docetaxel in patients with advanced NSCLC who progressed after first-line platinum-doublet chemotherapy. Overall survival (OS) and progression-free survival (PFS) were extrapolated beyond the trial period using parametric models. A cure model assuming a 1% cure fraction was fitted to the OS data for atezolizumab. Outcomes for nivolumab were informed by a network meta-analysis (NMA) vs atezolizumab. Resource use and costs were informed by clinical expert opinion and published Canadian sources. Utility values were obtained from the OAK trial. The perspective of the analysis was that of the Canadian publicly-funded healthcare system. The base case time horizon was 10?years, and the discount rate was 1.5% annually for both costs and effects. Scenario analyses were performed to test the robustness of the results and all analyses were performed probabilistically.

Results: Atezolizumab demonstrated a quality-adjusted life-year (QALY) gain of 0.60 compared with docetaxel at an incremental cost of $85,073, resulting in an incremental cost-effectiveness ratio (ICER) of $142,074/QALY. Atezolizumab dominated nivolumab (regardless of dosing regimen), based on modest differences in both QALYs and costs. Docetaxel was most likely to be cost effective at willingness-to-pay (WTP) thresholds below $125,000/QALY gained, while atezolizumab was most likely to be cost effective beyond this WTP threshold. In most scenario analyses, the results remained robust to changes in parameters. A reduced time horizon and alternative approaches to the NMA had the greatest impact on cost-effectiveness results.

Conclusion: Atezolizumab represents a cost-effective therapeutic option in Canada for the treatment of patients with advanced NSCLC who progress after first-line platinum doublet chemotherapy.  相似文献   
14.
Forward guidance can be provided as an unconditional promise, i.e. commitment to a specific low policy rate. Alternatively, the promise may include an escape clause, i.e. a condition defining the state of the economy under which the central bank would not keep such a low rate and, instead, it would revert to setting policy under discretion. The escape clause can be expressed as a threshold in terms of a specific variable. The present paper shows that, when such a threshold is expressed in terms of an endogenous variable (e.g. output, inflation), there are cases where it becomes impossible for the central bank to act in a way that is consistent with its promise. Consistency imposes limits on the policy rate that can be set since reverting immediately to the optimal discretionary rate can be incompatible with exceeding the threshold.  相似文献   
15.
An empirical model of attendance factors at major sporting events   总被引:1,自引:0,他引:1  
Sports events represent a major category of event revenue contributing economic benefits to cities and regions. Whilst attendance at sports events is recognised as an important leisure and entertainment activity (Shamir and Ruskin, 1984), over the past 20 years sports event attendance expenditure has been declining as a percentage of total recreation expenditure (Ross, 2006). Consequently, an understanding of the factors that influence sports event attendance is crucial to the sustainability of these events. This study identifies the antecedents of sports event attendance among 460 respondents who were surveyed in Melbourne, a city that was recognised as the Ultimate Sports City in 2008 (Church-Sanders, 2008). Structural Equation Modelling was used to create an empirical model of attendance motivations. The model identifies constructs relating to emotional responses and facilities, as the predictors of event attendance and provides a discussion of the implications of this research for sporting event and hospitality managers.  相似文献   
16.
Research into the capital structure of firms has been the subject of extensive empirical investigation but further progress may be constrained by the conventional paradigm underlying most of this work. This paper seeks to extend the debate by examining the endogenous influence of corporate strategy on financing decisions made by firms. While the theoretical specification of the possible relationship has to be developed further, various models were constructed and company data from Australia, an economy with some notoriety for fairly loose corporate debt management, was used to examine various hypothesized relationships. Our analysis suggests that corporate strategy influences capital structure, particularly for the most diversified firms, and that the emerging relationship is complex. Profit, cash flow, the rate of growth and the level of earnings risk are important additional internal influences on capital structure. The results are reasonably robust and indicate that this focus of enquiry has considerable potential for further resolution of the capital structure puzzle, as well as contributing to the debate on the impact of institutional shareholders on the corporate strategy of the firms in which they invest.  相似文献   
17.
Interconnection in Network Industries   总被引:4,自引:0,他引:4  
Recent deregulation of telecommunications in the U.S. and elsewhere has highlighted the importance of interconnection in network industries. In this paper, we analyse interconnection in a deregulated network where the participants compete in the final retail market. We consider both the case of a mature industry as well as one where a new entrant challenges the incumbent. In the later case, network externalities allow the incumbent to use the terms of interconnection to maintain its dominant position. Moreover, in either case, competition in the retail market can be undermined by collusion over access prices. We discuss the implications for some of the provisions of the new U.S. Telecommunications Act, specifically mandatory interconnection and reciprocity of tariffs, comparing these to the simple bill and keep rule.  相似文献   
18.
Despite the difficulty of finding comparable firms in a less populated market, we provide evidence on the usefulness of the comparable firm approach using 275 Australian industrial IPOs from 1993 to 2000. We show that, without adjustments, IPO price-earnings (P/E) and market-to-book (P/B) multiples based on management forecasts of earnings and book values of equities provided in prospectuses are strongly associated with the average P/E and P/B multiples of two comparable firms (matched on industry, growth and size). Additional tests show that the value estimated using the comparable firm approach (in the form of a P/V ratio, where P is the offer price and V is the estimated firm value) is associated with IPO underpricing.  相似文献   
19.
ABSTRACT

International Joint Ventures (IJVs) have become an important means of market entry for many firms, particularly those seeking entry into Asia (Lin and Germain, 1999 Lin, X. and Germain, R. 1999. Predicting international joint venture interaction frequency in U.S.-Chinese ventures. Journal of International Marketing, 7(2): 523. [Web of Science ®] [Google Scholar]). As such, it is important to understand what causes some IJVs to fail and others to succeed. This study examines the relationship between partners' needs, commitment, control, and conflict between the IJV partners in a developing country of South East Asia. The findings revealed that IJV inter-party conflict was significantly influenced by all three variables, namely, partners' needs, commitment and control thereby providing support for previous research in a different national setting.  相似文献   
20.
Ambiguity about the chances of winning represents a key aspect in lotteries. By means of a controlled field experiment, we exogenously vary the degree of ambiguity about the winning chances of lotteries organized to incentivize the contribution for a public good. In one treatment, people have been simply informed about the maximum number of potential participants (i.e. the number of lottery tickets released). In a second treatment, this information has been omitted as in all traditional lotteries. Our general finding shows that simply reducing the degree of ambiguity of the lottery leads to a sizable and significant increase (67%) in the participation rate. This result is robust to alternative prize configurations.  相似文献   
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