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The significance of prognostic variables in the survival was evaluated by univariate analysis and Cox stepwise regression model. 结果全组中位生存时间14.;5个月，1，3，5年生存率分别为60%25，21%25和7%25。
Then,stepwise regression analysis is used to select a best group of factors for the prediction of expressway incident duration,and the multiple linear regression model is established. 在此基础上,通过逐步回归分析确定用于高速公路事件持续时间预测的最佳变量组合并建立多元线性回归模型。
Nonlinear multiple regression model on the structure activity relationship of ternary dissymmetric organic phosphate insecticide is obtained by quadratic polynomial stepwise regression method. 摘要采用二次多项式逐步回归分析法建立了三元不对称有机磷酸酯类杀虫剂的多元非线性构效关系回归模型。
It is feasible to predict soil infiltration capacities by routine physical parameters with stepwise regression models with multiple units. 采用多元逐步回归模型用常规土壤物理参数对土壤水分入渗模型参数进行预报是可行的。
To solve the problem,this paper presents a fixed stepwise regression modeling method for linear system with color noise. 针对这一问题,该文提出一种修正的逐步回归法,用于对有色噪声环境下的线性系统建模。
Through the methods of multiple linear stepwise regressions, the main environment factors were found and multiple linear regression models among the transpiration rate and environment factors were set up. 通过多元线性逐步回归方法，得到了影响沙质海岸蒸腾速率的主要环境因子，及其与土壤呼吸速率之间的多元回归模型。
STUDY THE METHOD OF THE STEPWISE REGRESSION AND ITS CONSISTENCY ON SELECTION SELF-VARIABLE IN LINEAR REGRESSION MODEL 线性回归模型中自变无选择的逐步回归方法及其相合性研究
Application of Stepwise Regression Model Based on Mean-valued Generated Function in the Forecast of Long-term Temperature Decreasing and Precipitation 均生函数逐步回归模型在降温、降水长期过程预测中的应用
stepwise regression model 逐步回归
Multiple stepwise regression model analysis revealed that BMDs at various skeletal regions were dependent variables while height,weight,body mass index (BMI),BS and projective bone area(BA)were independent variables; 以身高、体重、体重指数(BMI)、体表面积(BS)作为自变量,以BMD作为因变量的多元逐步回归分析显示:影响后前位腰椎、髋部和前臂BMD的最重要的变量是BS。
The model used multiple stepwise regression method and back propagation method independently. 模型分别采用多元逐步回归方法和反向传播方法。
The results of application of PPR model to the precipitation prediction in three regions are better than that of stepwise regression for fitting and prediction. 在三个地区应用PPR进行降水量预测建模、模型的拟合及预留预测检验结果均好于逐步回归建模的相应结果。
A burdening optimization model for sintering based on GA (Genetic Algorithm) and stepwise regression, was established and proved at Chongqing Iron and Steel Co. 摘要运用遗传算法和逐步回归分析的方法建立烧结配料优化模型，对重钢烧结配料优化，并进行了实验验证和分析。
Stepwise regression analysis was used to build mathematical model of radial keratotomy(RK), for analyzing factors influencing on the result, and predicting the RK result. 本文运用逐步回归方法建立放射状角膜切开术预测系统的非线性数学模型，分析各因素对手术效果的影响。
The temperature compensating model is gained in the help of the method of stepwise regression by temperature experiment repeated, and its applicability is validated. 通过重复性温度实验,利用逐步回归法得到了温度补偿模型,并对模型的实用性进行了实验验证。
A burdening optimization model for sintering based on GA (Genetic Algorithm) and stepwise regression, was established and proved at Chongqing Iron and Steel Co., Ltd. 摘要运用遗传算法和逐步回归分析的方法建立烧结配料优化模型，对重钢烧结配料优化，并进行了实验验证和分析。
The new kind of temperature compensating model is established in the help of the method of stepwise regression by lots of high-low temperature experiment repeated. 通过大量高低温环境的重复性温度实验,利用逐步回归法建立了一种零偏温度补偿模型,并对该模型的补偿效果进行了实验测试。
T-test, ANOVA, MANOVA and multiple stepwise regression methods were used to analyze data. 文献部份以分析领导理论之发展、情境领导理论与学校效能之理论与相关研究为主。
The multiple stepwise regression equation is A vol=122. EB eth+0 72 ? Time 109 5(R 2=0 927, P< 0 001). 将冲洗时间加入多元分析 ;回归方程R2 =0 92 7;P <0 0 0 1。
The stepwise regress technology was applied to analyze the factors after virtualization of status variables. 将状态变量转化成虚拟变量后，运用逐步回归技术进行因素的回归分析。