Incidence and outcome for patients with occult lymph node involvement in T1 and T2 oral squamous cell carcinoma: a prospective study

Table 1 Demographic, Clinical, and Cancer Characteristics of all patients, with and without lymph node involvement

	All patients		Without lymph node involvement		With lymph node involvement		p-value
Characteristic	No.	%	No.	%	No.	%
Mean age (years)	60.6		60.25		62.28
SD	12.45		12.45		12.39
Range	30-91		30-91		30-91
Sex
Woman	105	32.1	82	78.1	23	21.9	0.215
Men	222	67.9	184	82.9	38	17.1	0.215
Performance status
Dead	129	39.4	98	76.0	31	24.0	0.074
Alive	198	60.6	168	84.8	30	15.2	0.074
Tumor stage
1	193	59.0	175	90.6	18	9.3	< 0.001*
2	134	41.0	91	67.9	43	32.1	< 0.001*
N stage
0	266	81.3	266	100
1	61	18.7			61	100
Tumor grade
1	52	15.9	48	92.3	4	7.7
2	236	72.2	198	83.9	38	16.1	< 0.001*
3	39	11.9	20	51.3	19	48.7
Recurrence
0	257	78.6	214	83.3	43	16.7	0.083
1	70	21.4	52	74.3	18	25.7	0.083

ISSN: 1471-2407