Table 2 Baseline characteristics of patients, after propensity score matching
Variables | Open group | Robot group | P value |
|---|---|---|---|
(n = 109) | (n = 109) | ||
Age, years (mean ± SD) | 40.81 ± 10.84 | 41.78 ± 9.36 | 0.259 |
Sex, female (%) | 91 (83.5) | 94 (86.2) | 0.700 |
BMI (median (range)) | 23.73 (17.58–33.37) | 24.53 (16.63–37.77) | 0.984 |
Extent of surgery (total thyroidectomy [%]) | 93 (85.1) | 88 (80.7) | 0.278 |
Lymph nodes dissection | 0.940 | ||
None (%) | 15 (13.8) | 14 (12.8) | |
Unilateral (%) | 72 (66.1) | 75 (68.8) | |
Bilateral (%) | 22 (20.2) | 20 (18.3) | |
Tumor size (cm, median (range)) | 0.7 (0.2–2.5) | 0.7 (0.2–2.5) | 0.331 |
Multiplicity (%) | 25 (22.9) | 28 (25.7) | 0.760 |
Bilaterality (%) | 20 (18.3) | 21 (19.3) | 1.000 |
Extrathyroidal extension (%) | 36 (33.0) | 38 (34.9) | 0.888 |
Stage (I/III, %) | 92 (89.0)/12 (11.0) | 93 (85.3)/16 (14.7) | 0.317 |