. 2021 Nov 20;17(2):1024–1029. doi: 10.1016/j.jds.2021.10.019

Table 1.

Patient characteristics

Factor		Number of patients / Mean ± standard deviation			p value
Factor		Total	Oral cancer	Oropharyngeal cancer	p value
Age (years)		65.8 ± 11.6	66.0 ± 12.5	65.3 ± 9.67	0.582
Sex	Female	94	80	14	<0.001
Sex	Male	272	162	110	<0.001
Diabetes	(−)	301	195	106	0.312
Diabetes	(+)	65	47	18	0.312
Leukocytes		2969 ± 1234	3056 ± 1295	2800 ± 1092	0.060
Lymphocytes		441 ± 310	488 ± 325	351 ± 258	<0.001
Creatinine		0.877 ± 0.736	0.803 ± 0.678	1.02 ± 0.822	0.007
Albumin		3.64 ± 0.537	3.67 ± 0.516	3.57 ± 0.571	0.086
Total dose		64.3 ± 5.13	62.7 ± 4.95	67.6 ± 3.79	<0.001
Neck dissection before RT	(−)	138	45	93	<0.001
Neck dissection before RT	(+)	228	197	31	<0.001
RT method	3D-CRT	277	211	66	<0.001
RT method	IMRT	89	31	58	<0.001
Concurrent therapy	RT alone	115	98	17	<0.001
	CRT	214	133	81
	BRT	37	11	26
Remaining teeth	(−)	26	19	7	0.523
Remaining teeth	(+)	340	223	117	0.523
Alveolar bone loss	50% or less	231	163	68	0.022
Alveolar bone loss	more than 50%	135	79	56	0.022
Periapical lesion at the start of RT	(−)	310	206	104	0.761
Periapical lesion at the start of RT	(+)	56	36	20	0.761
Severe periodontal disease at the start of RT	(−)	334	218	116	0.330
Severe periodontal disease at the start of RT	(+)	32	24	8	0.330
Tooth extraction before RT	(−)	215	151	64	0.056
Tooth extraction before RT	(+)	151	91	60	0.056
Tooth extraction after RT	(−)	332	221	111	0.573
Tooth extraction after RT	(+)	34	21	13
Total		366	242	124

Abbreviations: 3D-CRT: three dimensional conformal radiotherapy; BRT: bio-radiotherapy; CRT: chemo-radiotherapy; IMRT: intensity modulated radiotherapy; RT: radiotherapy.