Table 2.
NIFI group (n=90) | Control group (n=90) | χ 2(t) Value | P Value | |
---|---|---|---|---|
Age, mean ± SD | 42.1 ± 9.5 | 42.7 ± 9.1 | 0.369 | 0.713 |
Sex, n (%) | 0.556 | 0.456 | ||
Male | 20 (22.2%) | 16 (17.8%) | ||
Female | 70 (77.8%) | 74 (82.2%) | ||
BMI, mean ± SD | 23.6 ± 3.0 | 23.5 ± 2.7 | -0.244 | 0.807 |
Size of the largest tumor, mean ± SD, mm | 14.3 ± 8.5 | 13.2 ± 8.1 | -0.934 | 0.351 |
Preoperative PTH, mean ± SD (pg/mL) | 49.9 ± 15.5 | 48.1 ± 14.1 | -0.835 | 0.405 |
CLND, n (%) | 0.394 | 0.530 | ||
Unilateral | 29 (32.2%) | 33 (36.7%) | ||
Bilateral | 61 (67.8%) | 57 (63.3%) | ||
No. of resected LNs, mean ± SD | 11.0 ± 6.7 | 9.9 ± 6.4 | -1.097 | 0.274 |
No. of metastatic LNs, mean ± SD | 2.8 ± 4.2 | 2.1 ± 2.6 | -1.363 | 0.175 |
BMI, body mass index; PTH, parathyroid hormone; CLND, central lymph node dissection; LNs, lymph nodes.