Table.

Comparison of patient, tumor, and treatment characteristics in patients managed with CLND and SND

	All patients		CLND patients		SND patients
Variable	n	%	n	%	n	%	P value
Age (y)
≤45	275	56.8	214	58.8	61	50.8	.127
>45	209	43.2	150	41.2	59	49.2
Sex
Female	281	58.1	209	57.4	72	60.0	.619
Male	203	41.9	155	42.6	48	40.0
Operation
Less than total thyroid	52	10.7	42	11.5	10	8.3	.325
Total thyroidectomy	432	89.3	322	88.5	110	91.7
T stage
pT1	146	30.4	114	31.6	32	26.9	.335
pT2	39	8.1	25	6.9	14	11.8
pT3	228	47.5	176	48.8	52	43.7
pT4	67	14.0	46	12.7	21	17.6
N stage
pN0	23	4.8	11	3.0	12	10.0	.002
pN1a	20	4.1	5	1.4	15	12.5
pN1b	441	91.1	348	95.6	93	77.5
ECS
No	154	59.7	120	58.5	34	64.2	.458
Yes	104	40.3	85	41.5	19	35.8
PORT
No	475	98.1	356	97.8	119	99.2	.463
Yes	9	1.9	8	2.2	1	0.8
RAI
No	120	24.8	86	23.6	34	28.3	.3
Yes	364	75.2	278	76.4	86	71.7
Variable	Mean	SD	Mean	SD	Mean	SD	P value
Number of positive nodes	5.2	5.3	5.7	5.4	3.6	4.5	<.001
Total number of nodes	32.2	19.4	35.2	19.4	22.1	15.6	<.001
Duration of follow-up	91	73.9	94.3	73.1	81.1	75.6	.098

CLND, Comprehensive lateral neck dissection; ECS, extracapsular extension; PORT, postoperative radiation therapy; SND, selective neck dissection; RAI, radioactive iodine.