Herndon, EJ, Harrell, FE (1990) The restricted cubic spline hazard model. Commun Stat-Theory and Methods 19: pp. 639-663J. E. Herndon and F. E. Harrell. The restricted cubic spline hazard model. Comm Stat Th Meth , 19:639–663, 1990. MathSciNet...
Examples show that the inclusion of time-dependent covariables defined as step functions into the restricted cubic spline proportional hazards model reduces computation time by a factor of 213 over the Cox model. Advantages of the spline model also include flexibility of the hazard, smooth survival ...
The restricted cubic spline hazard model. Commun Stat-Theor M. 1990;19(2):639–63. Article Google Scholar Frome EL, Kutner MH, Beauchamp JJ. Regression analysis of poisson-distributed data. J Am Stat Assoc. 1973;68(344):935–40. Article Google Scholar Frome EL, Checkoway H. Use of...
限制性立方样条在非线性回归中的应用研究 The Application of Restricted Cubic Spline in Nonlinear Regression 下载积分: 1500 内容提示: 限制性立方样条在非线性回归中的应用研究事罗剑锋1,2金欢1· 2李宝月1· 2赵耐青1· 2△· 229·【提要】目的探讨限制性立方样条在自变量和应变量非线性相关时的应用。方法...
(Table2). Inspection of the restricted cubic spline showed that the HR was below unity across the full range of ejection fraction, with the upper 95% CI around the HR crossing unity only at the extreme ends of the range (at around 9% and 70%, respectively), probably due to the small...
a trend test was performed after the median value of each quartile was entered into the model and treated as a continuous variable. The restricted cubic spline models were with 4 knots (at the 5th, 35th, 65th, and 95th percentiles) were conducted to test whether there was a dose-response ...
The relationship between uACR and new-onset HF was studied using Cox proportional hazard models and restricted cubic spline. The area under the receiver operating characteristic curve (AUC), net reclassification improvement (NRI), and integrated discrimination improvement (IDI) were used to see if ...
The restricted cubic spline as baseline hazard in the proportional hazards model with step function time-dependent covariables. We incorporate a cubic spline function where the tails are linearly constrained, as the baseline hazard, into the proportional hazards model. We show estim... II James,FE...
The restricted cubic spline curve analysis visualized an inverted S-shaped association between 24 h UPE level and the risk of a six-point MACE, indicating a significantly increased risk of a six-point MACE in patients with a low 24 h UPE level. In conclusion, low 24 h UPE is associated ...
(ANOVA) for continuous variables. The restricted cubic spline, with six knots were placed at 0.4, 0.6, 0.8, 1.0, 1.2 and 1.4 mg/dL of serum creatinine, was utilized to depict the potential non-linear association between SCr at the admission and risk of respiratory failure requiring ...