Table 1.

Patient characteristics between intensity‐modulated proton therapy (IMPT) and volumetric‐modulated arc therapy (VMAT) treatment groups.

	IMPT	VMAT	P‐value
Patient number	19	16
Age at treatment (yr)			0.79
Median (range)	71 (54–84)	71 (55–83)
Gender			0.42*
Male, No. (%)	14 (73.7)	14 (87.5)
Body mass (kg)			0.55
Median (range)	83.2 (53.8–123.0)	82.5 (69.9–111.3)
CTVhigh volume (cm3)			0.40
Median (range)	205.0 (117.6–515.6)	219.0 (102.5–531.4)
CTVlow volume (cm3)			0.98
Median (range)	440.00 (151.8–1144.7)	447.10 (140.9–773.8)
Motion amplitude (mm)			0.91
Median (range)	8 (4–13)	6.2 (6–13.7)

CTV, clinical target volume.

^* P‐value from Fisher's exact test. Others are P‐values from Wilcoxon rank‐sum test.