Table 5. Variables Associated with Weight Gain in Patients with Thyroid Cancer, 3 to 4 Years after Thyroidectomy.
| Variable | Group | P valuea | ||
|---|---|---|---|---|
| A: no weight gain (n=113) | B: weight gain <5% of baseline weight (n=452) | C: weight gain >5% of baseline weight (n=135) | ||
| Female patients | 99 (17) | 366 (63) | 115 (20) | |
| Age at surgery, yr | 49.1±11.1 | 50.6±10.1 | 47.2±10.7 | B/Cb, A/B, and A/C-NS |
| RAI, % | 81.9 | 87.4 | 87.8 | 0.9 |
| THW | 81.4 | 85 | 81.2 | |
| rhTSH | 18.6 | 15 | 18.8 | |
| 3-4 Years TSH, mU/L | 0.01 (0.01-0.07) | 0.05 (0.01-0.32) | 0.09 (0.01-0.80) | A/Bb, A/Cb, and B/C-NS |
| 3-4 Years T3, nmol/L | 1.6 (1.48-1.75) | 1.48 (1.33-1.63) | 1.42 (1.31-1.62) | 0.49 |
| Male patients | 14 (12) | 86 (72) | 20 (16) | |
| Age at surgery, yr | 54.4±11.4 | 52.9±8.7 | 45.9±9.0 | A/Cc, B/Cb, and A/B-NS |
| RAI, % | 78.5 | 89.5 | 100 | 0.71 |
| THW | 72.7 | 80.5 | 80 | |
| rhTSH | 27.3 | 19.5 | 20 | |
| 3-4 Years TSH, mU/L | 0.01 (0.01-0.03) | 0.10 (0.02-0.88) | 0.06 (0.01-0.85) | 0.08 |
| 3-4 Years T3, nmol/L | 1.56 (1.49-1.71) | 1.46 (1.31-1.59) | 1.5 (1.25-1.76) | 0.24 |
Values are expressed as number (%), mean±SD, or median (range).
NS, not significant; RAI, radioactive iodine; THW, thyroid hormone withdrawal; rhTSH, recombinant human thyroid stimulating hormone; TSH, thyroid stimulating hormone; T3, triiodothyronine.
aThe values were evaluated with the Tukey post hoc test for group differences; bP<0.01; cP<0.05 for group differences.