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Table 1 Characteristics for head and neck cancer patients (n = 266). Continuous variables are displayed as mean (SD), while categorical variables are displayed as count (%)

From: Predicting acute radiation induced xerostomia in head and neck Cancer using MR and CT Radiomics of parotid and submandibular glands

 Internal Validation Cohort
(n = 216)
External Validation Cohort
(n = 50)
Patient Demographics
 Age (yrs)58 (10)60 (13)
 Male n176 (81)46 (92)
 Xerostomia > 2 n87 (40)14 (28)
 TomoTherapy n16 (7)22 (44)
Tumor Site
 Oropharynx92 (43)27 (54)
 Oral Cavity49 (23)13 (26)
 Nasopharynx13 (6)6 (12)
 Hypopharynx4 (2)0 (0)
 Larynx19 (9)3 (6)
 Thyroid5 (2)0 (0)
 Accessory Sinuses7 (3)1 (2)
 Other27 (12)0 (0)
DVH Parameters
 cPG D40 (Gy)27.8 (14.7)22.8 (9.9)
 cSG D60 (Gy)56.8 (23.5)49.5 (17.8)