Table 1 Clinical characteristics of the patients (n = 129)
Variable | ETOVA (n=79) | ETAA(n=50) | P value | |
|---|---|---|---|---|
Age (y) | 36.63 ± 8.11 | 37.06 ± 8.23 | 0.773 | t = 0.290 |
Sex | ||||
Male | 17 | 11 | 0.949 | χ2 = 0.004 |
Female | 62 | 39 | ||
Surgical extent | ||||
lobectomy | 69 | 45 | 0.646 | χ2 = 0.211 |
Total thyroidectomy | 10 | 5 | ||
Diameter of largest tumor (mm) | 7.84 ± 4.24 | 9.40 ± 7.51 | 0.187 | t = 1.332 |
Extra thyroidal extension | ||||
Absent | 69 | 44 | 0.912 | χ2 = 0.012 |
Present | 10 | 6 | ||
Capsule invasion | ||||
Absent | 69 | 43 | 0.826 | χ2 = 0.048 |
Present | 10 | 7 | ||
I/II/III/IV | 75/2/2/0 | 48/1/1/0 | ||
Number of dissected lymph nodes | 6.93 ± 5.35 | 5.92 ± 4.86 | 0.279 | t = 1.087 |
Number of positive lymph nodes | 0.84 ± 1.75 | 1.04 ± 2.00 | 0.569 | t = 0.572 |
Operative time (min) | 162.53 ± 35.10 | 122.82 ± 34.14 | 0.000 | t = 6.326 |
Lobectomy | 156.44 ± 30.84 | 119.17 ± 29.68 | 0.000 | t = 6.399 |
Total thyroidectomy | 204.50 ± 35.31 | 155.60 ± 55.64 | 0.056 | t = 2.095 |
Blood loss during surgery (ml) | 27.84 ± 11.39 | 25.00 ± 12.16 | 0.180 | t = 1.347 |
Lobectomy | 26.52 ± 10.95 | 23.77 ± 11.73 | 0.206 | t = 1.271 |
Total thyroidectomy | 37.00 ± 10.59 | 36.00 ± 11.40 | 0.869 | t = 0.168 |
Amount of drainage (ml) | 168.35 ± 77.25 | 144.60 ± 57.07 | 0.063 | t = 1.874 |
Lobectomy | 162.46 ± 77.06 | 139.66 ± 56.28 | 0.090 | t = 1.708 |
Total thyroidectomy | 209.00 ± 68.91 | 189.00 ± 48.27 | 0.574 | t = 0.577 |
Hospital stay after operation (day) | 4.18 ± 0.97 | 3.96 ± 0.90 | 0.182 | t = 1.342 |
Lobectomy | 4.15 ± 1.02 | 3.86 ± 0.84 | 0.113 | t = 1.598 |
Total thyroidectomy | 4.40 ± 0.51 | 4.80 ± 1.09 | 0.344 | t = 0.981 |