Table 2.

Clinical pathological characteristics of patients with PTC who underwent robotic thyroidectomy using the da Vinci S or Xi robotic systems.

Characteristic	S group (n = 40)	Xi group (n = 46)	P value
Age at operation, years (range)	46.7 (24–62)	47.3 (26–68)	.769
Sex (%)
Female	29 (72.5)	38 (82.6)	.304
Male	11 (27.5)	8 (17.4)
Body mass index	25.2 (19.1–36.0)	25.6 (18.4–36.0)	.598
Tumor size, cm (range)	0.75 (0.3–1.3)	0.89 (0.1–2.3)	.096
Multiplicity (%)			.158
No	36 (90.0)	36 (78.3)
Yes	4 (10.0)	10 (21.7)
Harvested LNs, n (range)	3.45 (0–12)	3.39 (0–13)	.928
Metastatic LNs, n (range)	0.40 (0–2)	0.50 (0–6)	.671
T classification (%)
T1a	32 (80.0)	33 (71.7)	.496
T1b	8 (20.0)	12 (26.1)
T2	0 (0.0)	1 (2.2)
N classification (%)
N0	30 (75.0)	38 (82.6)	.434
N1a	10 (25.0)	8 (17.4)