绘制calibration curve进行验证 采用和nomogram一样的变量进行多因素cox回归 5年 f5<-cph(formula = Surv(time,died) ~ age + catbili + sex + copper +stage + trt,data=pbc,x=T,y=T,surv = T,na.action=na.delete,time.inc = 1825) #参数m=50表示每组50个样本进行重复计算 cal5<-calibrate(f5,...
▲ Nomogram预测的3年、5年生存率与实际情况基本相吻合。Calibration plots comparing nomogram-predicted and actual survival probabilities ata3 andb5 years. The dotted line is thereference indicating ideal prediction ▲Nomogram to predict su...
The nomogram and calibration plots were generated with “rms” packages, and DCA was performed with the “stdca.R”. SPSS statistics 22.0 and R software (R version 3.5.2) were used to conduct the statistical analysis. A two sided P < 0.05 would be recognized as statistically ...
Neutrophil-to-high-density lipoprotein cholesterol ratio(NHR) and LAR were also screened into the nomogram-based model for 40-day MACEs after ICI-M, which performed well by validating for concordance index(0.779 95% CI: 0.677 - 0.865)and calibration plots after being bootstrap-corrected. More...
Predictive accuracy was measured using the concordance index (C-index) and calibration plots. Statistical differences between the C-indexes of the two models were analyzed. Models were validated by leave-one-out cross-validation and by using a validation cohort. The mean lesion size, presence of ...
The LASSO algorithm was conducted with “glmnet” packages, and ROC analysis was done with “timeROC” and “survivalROC” packages. The nomogram and calibration plots were generated with “rms” packages, and DCA was performed with the “stdca.R”. ...
Lasso binary logistic regression was done using the “glmnet” package, multivariate binary logistic regression, nomograms, and calibration plots were done with the “rms” package. The C-index calculation was performed using the “Hmisc” package. Internal validation was performed using the “rms”...
but not with age,gender,or surgical approach, LNR was an independent risk factor for postoperative prognosis in patients with head and neck squamous cell carcino-mao.A nomogram was built based on age,T stage,M stage,and LNR,and through the concordance index(C-index)and calibration plots,it ...
The independent predictors of STAS in clinical and CT characteristics were identified by logistic regression analysis and then used to build a nomogram. Concordance index (C-index), area under the curve (AUC) of receiver operating characteristic (ROC) and calibration plots were used to evaluate ...
The calibration plots for 2-year demonstrated good consistency between the predicted and observed probabilities for survival time. We established a nomogram including MTV, Dmax, and several clinical parameters to predict the PFS of patients with DLBCL, and the nomogram showed better predictability and ...