|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Gaining effciency via weighted estimators for multivariate failure time data显示文摘Multivariate failure time data arise frequently in survival analysis.A commonly used tech-nique is the working independence estimator for marginal hazard models.Two natural questions are how to improve the effciency of the working independence estimator and how to identify the situations under which such an estimator has high statistical effciency.In this paper,three weighted estimators are proposed based on three different optimal criteria in terms of the asymptotic covariance of weighted estimators.Simplifiedclose-form solutions are found,which always outperform the working indepen-dence estimator.We also prove that the working independence estimator has high statistical effciency,when asymptotic covariance of derivatives of partial log-likelihood functions is nearly exchangeable or diagonal.Simulations are conducted to compare the performance of the weighted estimator and work-ing independence estimator.A data set from Busselton population health surveys is analyzed using the proposed estimators. | FAN JianQing1,2,ZHOU Yong2,3,CAI JianWen4 & CHEN Min3 1 Department of Operations Research and Financial Engineering,Princeton University,Princeton,NJ08544,USA 2 Department of Statistics,Shanghai University of Finance and Economics,Shanghai 200433,China 3 Institute of Applied Mathematics,Academy of Mathematics and Systems Science,Chinese Academy of Sci-ences,Beijing 100190,China 4 Department of Biostatistics,University of North Carolina at Chapel Hill,Chapel Hill,NC 27599-7420,USA | 2009 | Science China Mathematics2009，52，6： | 2 |
| 2 | C-reactive protein is an independent predictor of severity in community-acquired pneumonia显示文摘 | Chalmers JD Singanayagam A Hill AT | 2008 | Am J Med2008，121，3： | 1 |
| 3 | Ultraetructurc of the nonciliated bronchiolar epithelial (Clara) cell of mammalian lung: A co, mparison of rabbit, guinea pig, rat, hamster, and mouse显示文摘 | Plopper CG Marisesy AT Hill LH | 1980 | Exp Lung Res1980，1，2： | 1 |
| 4 | British Thoracic Society guideline for non-CF bronchiectasis显示文摘 | Pasteur MC Bilton D Hill AT | 2010 | Thorax2010，65，7： | 1 |
| 5 | SHOCK INTERACTIONS IN NONEQUILIBIUM HYPERSONIC FLOW显示文摘A shock interaction problem is solved with finite difference methods for a hypersonic fiow of air with chemical reactions. If a body has two concave cornerst a secondary shock is formed in the shock layer and it meets the main shock later.As the two shocks meet, the flow becomes singular at the interaction point, and a new main shock, a contact discontinuity and an expansion wave appear as a result of interaction between the two shocks. Therefore, the problem is very complicated.Using proper combinations of implicit and explicit finite difference schemes according to the property of the equations and the boundary conditions, we compute the fiow behind the interaction point successfully. | Taehoon Park(Department of Mathematics, The University of North Carolina at Chapel Hill, USA)You-lan Zhu (Department of Mathematics, The University of North Carolina at Charlotte, USA) | 1997 | Journal of Computational Mathematics1997，15，4： | 1 |
| 6 | The interrelationship of sputum inflammatory markers in patients with chronic bronchitis显示文摘 | Hill AT Bayley D Stockley RA | 1999 | Am J Respir Crit CareMed1999，160，： | 1 |
| 7 | Pathogcnesis of myocardial ischemia-reperfusioo injury and rationale for therapy 显示文摘 | Turer AT Hill JA | 2010 | The American journal of cardi- ology2010，106，3： | 1 |
| 8 | C-reactive protein is an inde-pendent predictor of severity in community-acquired pneumonia显示文摘 | Chalmers JD Singanayagam A Hill AT | | 0，，： | 1 |
| 9 | British Thoracic Societyguideline for non-CF bronchiectasis 显示文摘 | Pasteur MC Bilton D Hill AT | 2010 | Thorax2010，651，： | 1 |
| 10 | Pathogenesis of myocardial ischemia- reperfusion injury and rationale for therapy 显示文摘 | Turer AT Hill JA | 2010 | Am J Cardiol2010，106，3： | 1 |
| 11 | Pathogenesis of myocardial ischemia- reperfusion injury and rationale for therapy显示文摘 | Turer AT Hill JA | 2010 | Am J Cardiol2010，106，3： | 1 |
| 12 | C - reactive protein is an independent predictor of severity in community - acquired pneumonia显示文摘 | Chalmers JD Singanayagam A Hill AT | 2008 | Am J Med2008，121，3： | 1 |
| 13 | The interrelationship of sputum inflam-motary makers in patients with chronic bronchitis显示文摘 | Hill AT Bayley D Stoeldey RA | 1999 | Am J Rspir CritCare Med1999，160，3： | 1 |
| 14 | Airways inflammation in chronic bronchitis : the effects of smoking and alphal-antitrypsin deficiency 显示文摘 | Hill AT Bayley DL Campbell EJ | 2000 | Eur Reapir J2000，15，5： | 1 |
| 15 | British Thoracic Societyguideline for non - CF bronchiectasis显示文摘 | Pasteur MC Bilton D Hill AT | 2010 | Thorax2010，65，1： | 1 |
| 16 | Boerhaave's syndrome:10 years experience and review of the literature显示文摘 | Hill AG Tiu AT Martin IG | 2003 | ANZ J Surg2003，73，12： | 1 |
| 17 | Inhaled corticos- teroids and risk of pneumonia:evidence for and against the proposed association显示文摘 | Singanayagam A Chalmers JD Hill AT | 2010 | Q J Med2010，103，6： | 1 |
| 18 | British Thoracic Society guideline for non-CF bronchiectasis显示文摘 | Pasteur MC Bilton D Hill AT | 2010 | Thorax2010，65，： | 1 |
| 19 | British Thoracic Society guideline for non-CF bronchiectasis显示文摘 | Pasteur MC Bilton D Hill AT | 2010 | Thorax2010，65，7： | 1 |
| 20 | Boerhaave's syndrome:10 years experienceand reviewof the literature显示文摘 | Hill AG Tiu AT Mar-tin IG | 2003 | ANZ J Sur g2003，73，12： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员