Results of a randomized controlled trial of level IIb preserving neck dissection in clinically node-negative squamous carcinoma of the oral cavity

Table 6 Quality of life

	Preop (mean ± SD)			1 month (mean ± SD)			3 months (mean ± SD)			6 months (mean ± SD)			12 months (mean ± SD)
	IIb sparing	Full dissec	p* value	IIb sparing	Full dissec	p* value	IIb sparing	Full dissec	p* value	IIb sparing	Full dissec	p* value	IIb sparing	Full dissec	p* value
GP (general physical)	18.92 ± 2.27	18.70 ± 4.50	0.878	19.08 ± 4.64	17.70 ± 3.71	0.360	21.20 ± 4.75	18.42 ± 5.65	0.196	26.50 ± 1.19	22.50 ± 4.87	0.034	26.75 ± 1.89	24.30 ± 4.47	0.320
GS (general social/family)	20.00 ± 5.84	20.25 ± 4.33	0.891	21.67 ± 5.19	21.05 ± 3.25	0.681	21.90 ± 4.45	22.21 ± 3.13	0.828	24.0 ± 2.72	23.38 ± 2.55	0.586	24.75 ± 2.50	24.0 ± 2.62	0.634
GE (general emotional)	7.67 ± 5.78	11.40 ± 4.97	0.063	14.58 ± 5.97	14.50 ± 5.19	0.967	17.40 ± 5.46	15.63 ± 5.25	0.403	22.62 ± 1.06	18.62 ± 5.72	0.066	23.0 ± 0.816	20.10 ± 5.80	0.350
GF (general functional)	9.33 ± 6.31	12.1 ± 4.48	0.158	13.33 ± 6.32	11.95 ± 5.49	0.520	17.10 ± 6.29	13.36 ± 6.51	0.150	22.12 ± 2.41	18.62 ± 4.95	0.074	24.25 ± 1.25	20.60 ± 4.59	0.152
HN (head and neck specific)	32.17 ± 4.72	35.6 ± 2.32	0.010	28.58 ± 5.05	25.60 ± 4.96	0.113	32.80 ± 7.13	27.05 ± 6.23	0.033	36.38 ± 5.09	30.44 ± 6.74	0.040	37.0 ± 5.80	30.10 ± 7.09	0.112
Total	88.08 ± 11.35	98.05 ± 15.49	0.063	97.25 ± 21.60	90.80 ± 18.06	0.371	110.40 ± 23.62	96.68 ± 22.31	0.135	131.62 ± 10.46	113.56 ± 20.71	0.031	135.75 ± 10.81	119.10 ± 22.82	0.195

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