Morphology, Volume, and Density Characteristics of the Parotid Glands before and after Chemoradiation Therapy in Patients with Head and Neck Tumors

Table 1

Patients description (age in years and the interval between CECTs in months).

Variable	Mean ± SD	Median	Min-max	N	Percentage (%)
Age	59.6 ± 9.9	59	42–89
Interval	7.1 ± 5.4	5	2–28
Gender
Male				45	91.8
Female				4	8.2
Total				49	100
Tumor location
Oral cavity				11	22.5
Hypopharynx				3	6.1
Larynx				7	14.3
Oropharynx				27	55.1
Rhinopharynx				1	2
Total				49	100
Skin color
White				42	85.7
Not-white				7	14.3
Total				49	100
Stage
I				1	2
III				8	16.3
IVa				34	69.4
IVb				6	12.2
Total				49	100

CECT: contrast-enhanced computed tomography; N: sample size; SD: standard deviation; min: minimum; max: maximum.