Table 3.
Comparison of the surgical outcomes between two groups, after propensity score matching
| Variables | Open group | Robot group | P value |
|---|---|---|---|
| n = 109 | n = 109 | ||
| Operation time (min, mean ± SD (range)) | 107.94 ± 30.84 (60–280) | 290.57 ± 74.37 (160–715) | < 0.001 |
| Hospital stay (days, mean ± SD (range)) | 3.40 ± 1.24 (2–11) | 3.56 ± 0.83 (2–8) | 0.293 |
| Cost ($, mean ± SD) | 2995 ± 695 | 7,632 ± 1,282 | < 0.001 |
| Pain score, operation day (mean ± SD (range)) | 3.84 ± 1.11 (0–7) | 3.76 ± 1.22 (0–7) | 0.669 |
| Pain score, postoperative 1 day (mean ± SD (range)) | 2.36 ± 0.99 (0–5) | 2.38 ± 1.06 (0–5) | 0.952 |
| Parathyroid gland in pathology | 42 (38.5) | 41 (37.6) | 1.000 |
| Identified number of parathyroid glands during surgery (mean ± SD (range)) | 2.68 ± 0.88 (0–4) | 2.54 ± 0.87 (1–4) | 0.160 |
| Minor complication (%) | 37 (34) | 43 (39) | 0.852 |
| Transient hypocalcemia | 29 | 36 | |
| Transient hoarseness | 6 | 7 | |
| Wound seroma | 1 | 0 | |
| Wound infection | 1 | 0 | |
| Major complication (%) | 6 (5.5) | 4 (3.7) | 0.754 |
| Bleeding | 1 | 1 | |
| Chyle leakage | 2 | 0 | |
| Permanent hoarseness | 1 | 1 | |
| Permanent hypocalcemia | 2 | 2 | |
| Radioiodine ablation (%) | 52 (47.7) | 67 (61.5) | 0.033 |
| Stimulated thyroglobulin (ng/mL, median (range)) | 0.25 (0–66.7) | 0.20 (0–6.8) | 0.954 |
| No. of metastatic lymph nodes (mean ± SD (range)) | 1.26 ± 3.07 (0–19) | 0.60 ± 1.26 (0–5) | 0.133 |
| No. of retrieved lymph nodes (mean ± SD (range)) | 5.29 ± 5.25 (0–29) | 3.50 ± 3.55 (0–17) | 0.002 |