Table 3.

Dose-volume histogram (DVH) for the considered organs at risk.

Organs at Risk	DVH Metric	S *	Median (P25–P75)	Difference with S1 *	%	p **
Spinal cord	D2%	1	27.91 Gy (21.06–31.76)
		2	26.48 Gy (22.10–32.51)	−1.43 Gy	−5.12%	0.66
		3	31.39 Gy (27.66–38.79)	3.48 Gy	12.46%	0.00
Parotid right	Dmean	1	20.54 Gy (15.86–25.52)
		2	20.82 Gy (17.56–25.67)	0.28 Gy	1.36%	0.68
		3	22.14 Gy (17.80–28.20)	1.6 Gy	7.78%	0.30
	V15Gy	1	45.70% (34.70–60.60)
		2	47.50% (36.30–57.15)	1.8%	3.93%	0.74
		3	66.30% (45.10–78.10)	20.6%	45.07%	0.00
	V30Gy	1	25.50% (14.70–33.90)
		2	26.20% (17.30–34.00)	1.2%	4.70%	0.84
		3	40.28% (30.30–54.60)	14.78%	57.96%	0.00
	V45Gy	1	12.40% (05.00–18.30)
		2	14.80% (06.70–19.90)	2.4%	19.35%	0.63
		3	27.95% (20.20–42.40)	15.55%	124.40%	0.00
Parotid left	Dmean	1	20.80 Gy (15.25–27.24)
		2	20.68 Gy (14.73–26.00)	−0.12 Gy%	−0.57%	0.84
		3	22.77 Gy (17.22–28.29)	1.97 Gy%	9.47%	0.26
	V15Gy	1	47.00% (30.90–62.40)
		2	45.60% (34.40–58.30)	−1.4%	−2.97%	0.51
		3	63.25% (51.60–83.30)	16.25%	34.57%	0.00
	V30Gy	1	26.10% (15.20–37.70)
		2	27.90% (14.90–36.30)	1.8%	6.89%	0.93
		3	44.80% (34.90–57.70)	18.7%	71.64%	0.00
	V45Gy	1	11.70% (05.70–21.40)
		2	12.60% (05.50–22.90)	0.9%	7.69%	0.88
		3	31.89% (22.00–41.40)	20.19%	172.56%	0.00
Larynx	Dmean	1	33.47 Gy (25.33–39.81)
		2	33.96 Gy (27.24–42.49)	0.49 Gy	1.46%	0.56
		3	39.00 Gy (32.85–42.50)	5.53 Gy	16.04%	0.02
	V40Gy	1	24.30% (00.00–40.84)
		2	27.60% (00.00–51.50)	3.3%	13.58%	0.41
		3	72.95% (57.25–98.05)	48.65%	200.20%	0.00
Oral cavity	V40Gy	1	33.45% (08.45–47.70)
		2	37.05% (14.50–52.65)	3.6%	10.76%	0.53
		3	70.40% (45.10–89.20)	36.95%	110.46%	0.00

* S, scenario: 1, OPLAN; 2, APLAN; 3 DPLAN. ** Statistical significance was evaluated considering scenario 1 as the reference using the Mann–Whitney test.