Table 1.

Patient characteristics.

Total patients	767	100%
Age(year), median (range)	51	(31–79)
IMRT
Yes	746	97.3%
No	21	2.7%
Gender
Male	686	89.4%
Female	81	10.6%
T-Stage
T1	7	0.9%
T2	301	39.2%
T3	282	36.8%
T4	177	23.1%
N-Stage
N0	71	9.3%
N1	72	9.4%
N2	590	76.9%
N3	34	4.4%
Primary Tumor Site
Oropharynx	554	72.2%
Hypopharynx	51	6.6%
Supraglottic larynx	122	15.9%
Other	40	5.2%
Hemoglobin level, mean(range)	14.3	(8–18.6)
Total radiation dose (Gy), median (range)	70	(2–73)
Total fractions, median (range)	35	(1–42)
Overall treatment time (day), median (range)	40	(1–74)
Target Volume (TV) Contour Quality Score
Per-protocol	411	53.6%
Variation acceptable	310	40.4%
Deviation unacceptable	46	6.0%
Organ At Risk (OAR) Contour Quality Score
Per-protocol	439	57.2%
Variation acceptable	304	39.6%
Deviation unacceptable	24	3.1%
Target Dose-Volume Score
Per-protocol	490	63.9%
Variation acceptable	210	27.4%
Deviation unacceptable	67	8.7%