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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 n

176 (81)

46 (92)

 Xerostomia > 2 n

87 (40)

14 (28)

 TomoTherapy n

16 (7)

22 (44)

Tumor Site

 Oropharynx

92 (43)

27 (54)

 Oral Cavity

49 (23)

13 (26)

 Nasopharynx

13 (6)

6 (12)

 Hypopharynx

4 (2)

0 (0)

 Larynx

19 (9)

3 (6)

 Thyroid

5 (2)

0 (0)

 Accessory Sinuses

7 (3)

1 (2)

 Other

27 (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)