Table 1.
Characteristics of patients with head and neck cancer treated by IMRT.
Table 2.
Candidate prognostic factors initially in the xerostomia dataset.
Figure 1.
The LASSO shrinking path diagrams at (a) 3- and (b) 12-month time point.
Abbreviation- LASSO: least absolute shrinkage and selection operator; Definition of prognostic factors: Same as Table 2.
Table 3.
Prognostic factors correlation ranking for the 3- and 12-month time points by LASSO.
Table 4.
Multivariate logistic regression coefficients and odds ratios for the NTCP models for patient-rated xerostomia 3 and 12 months after treatment for the optimal prognostic factors selection.
Table 5.
Multivariate logistic regression coefficients and odds ratios for the NTCP models for patient-rated xerostomia 3 and 12 months after treatment for the suboptimal prognostic factors selection.
Figure 2.
The average DVH diagrams for the mean doses delivered to the ipsilateral and contralateral parotids in the group with/without grade 3+ xerostomia at (a) 3- and (b) 12-month time point.
Abbreviation- DVH: dose–volume histogram; XER3m: xerostomia at 3-month time point; XER12m: xerostomia at 12-month time point.
Table 6.
System performance evaluation.