Sensitivity analyses of Nurtri-CoV performance on selected groups in the validation cohort, comparing performances and calibration measures corrected for optimism using bias corrected accelerated bootstrapping (B = 1,000).

Sensitivity analyses of Nurtri-CoV performance on selected groups in the validation cohort, comparing performances and calibration measures corrected for optimism using bias corrected accelerated bootstrapping (B = 1,000).针对验证队列（validation cohort）中选定亚组开展的Nurtri-CoV性能敏感性分析，对比了采用偏差校正加速Bootstrap（B=1000）校正乐观偏倚后的模型性能与校准指标。