140 research outputs found
Online Appendix to "Firm-Specific Capital, Nominal Rigidities and the Business Cycle"
Online appendix for the Review of Economic Dynamics article
Firm default and aggregate fluctuations
This paper studies the relation between macroeconomic fluctuations and corporate defaults while conditioning on industry affiliation and an extensive set of firm-specific factors. Using a logit approach on a panel data set for all incorporated Swedish businesses over 1990-2002, we find strong evidence for a substantial and stable impact of aggregate fluctuations. Macroeffects differ across industries in an economically intuitive way. Out-of-sample evaluations show our approach is superior to both models that exclude macro information and best fitting naive forecasting models. While firm-specific factors are useful in ranking firms’ relative riskiness, macroeconomic factors capture fluctuations in the absolute risk level.Business failures
Firm-Specific Capital, Nominal Rigidities and the Business Cycle
Macroeconomic and microeconomic data paint conflicting pictures of price behavior. Macroeconomic data suggest that inflation is inertial. Microeconomic data indicate that firms change prices frequently. We formulate and estimate a model which resolves this apparent micro - macro conflict. Our model is consistent with post-war U.S. evidence on inflation inertia even though firms re-optimize prices on average once every 1.5 quarters. The key feature of our model is that capital is firm-specific and pre-determined within a period.
Firm-specific capital, nominal rigidities and the business cycle
Macroeconomic and microeconomic data paint conflicting pictures of price behavior. Macroeconomic data suggest that inflation is inertial. Microeconomic data indicate that firms change prices frequently. We formulate and estimate a model which resolves this apparent micro - macro conflict. Our model is consistent with post-war U.S. evidence on inflation inertia even though firms re-optimize prices on average once every 1.5 quarters. The key feature of our model is that capital is firm-specific and predetermined within a period.Business cycles ; Macroeconomics ; Microeconomics
Firm-specific capital, nominal rigidities, and the business cycle
Macroeconomic and microeconomic data paint conflicting pictures of price behavior. Macroeconomic data suggest that inflation is inertial. Microeconomic data indicate that firms change prices frequently. We formulate and estimate a model which resolves this apparent micro - macro conflict. Our model is consistent with post-war U.S. evidence on inflation inertia even though firms re-optimize prices on average once every 1.5 quarters. The key feature of our model is that capital is firm-specific and predetermined within a period.Inflation (Finance) ; Monetary policy ; Business cycles
Pericardial fat volume as a predictor of atherosclerosis, stenosis severity and plaque composition in symptomatic and asymptomatic populations - a cardiac CT angiography study
Introduction: Coronary CT angiography (CCTA) can provide comprehensive information of the coronary arteries, including the identification of coronary plaques, determination of stenosis severity and morphological characterization of plaques with regard to the presence or absence of calcification – all of which have been linked to the pathogenesis of coronary artery disease (CAD). It is also possible to calculate the pericardial fat volume (PFV) using CCTA; however the relationship of PFV to CAD has been controversial. The aim of this study was to evaluate the relationship between PFV and these indicators of CAD in asymptomatic and symptomatic population-based cohorts.
Method and Results: The CCTA scans of asymptomatic (383) people and symptomatic (549) patients were examined. The symptomatic patients were part of the “Cardiac cT in the treatment of acute Chest pain” (CATCH) trial and were admitted on suspicion of acute coronary syndrome with a normal electrocardiogram and troponins. The asymptomatic cohort was taken randomly from the Copenhagen General Population Study. Measurements were made on the PFV, stenosis grading, plaque characteristics, and coronary artery calcium (CAC) scores. Relations between PFV and the indicators of CAD were assessed using logistic regression.
In the symptomatic population, 59% of the patients had atherosclerosis present, compared to 73% in the asymptomatic population. Symptomatic patients with atherosclerosis had a significantly higher mean PFV (142.96 mL) compared to those without (111.22 mL, P<0.001). A significant difference was also detected in the asymptomatic population (199.32 mL vs. 171.5 mL, P=0.079). When adjusting for age, gender, and BMI, a larger PFV was significantly associated with atherosclerosis in symptomatic patients (P=0.044), but not asymptomatic patients (P=0.358). PFV was not a predictor of significant coronary artery stenosis (≥70%) in either population, although in symptomatic patients, increased PFV was independently associated with the presence of noncalcified plaques (P=0.032). There was no relationship between PFV and CAC scores in symptomatic or asymptomatic populations (P=0.403 and P=0.292 respectively).
Conclusion: These findings support the hypothesis that PFV contributes to the presence of coronary atherosclerosis and also can indicate the presence of non-calcified plaques, but only for symptomatic patients. However, PFV cannot predict the degree of stenosis.This research was supported by the Undergraduate Research Opportunities Program (UROP)
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