Table 2.
Risk of permanent hypoparathyroidism after total thyroidectomy
| Univariate regression | Multivariate regression | |
|---|---|---|
| OR (95% CI) | ORb (95% CI) | |
| Age | 0.90 (0.81–1.02) | 0.89 (0.78–1.01) |
| Gender | ||
| Female | 1.00 | 1.00 |
| Male | 0.90 (0.29–2.82) | 0.73 (0.19–2.75) |
| Type of thyroid disease | ||
| Thyrotoxicosis | 0.94 (0.20–4.36) | 1.38 (0.22–8.87) |
| Benigna | 1.00 | 1.00 |
| Malignant | 1.25 (0.19–8.08) | 19.6 (0.6–6.28) |
| Lymph node surgery | ||
| No | 1.00 | 1.00 |
| Yes | 0.67 (0.15–3.02) | 0.25 (0.01–7.07) |
| Number of identified parathyroid glands | ||
| 2 or less | 1.00 | 1.00 |
| 3 or more | 0.61 (0.23–1.60) | 0.69 (0.24–2.05) |
| Parathyroid re-implantation | ||
| No | 1.00 | |
| Yes | 1.13 (0.45–2.88) | 1.34 (0.45–4.02) |
| Operation time (min) | ||
| <120 | 1.00 | 1.00 |
| 120–180 | 0.54 (0.16–1.85) | 0.52 (0.14–1.93) |
| >180 | 2.58 (0.76–8.72) | 4.43 (0.94–20.8) |
| Not reported | 0.58 (0.14–2.41) | 0.49 (0.10–2.29) |
| Thyroid specimen weight (g) | ||
| <25 | 1.00 | 1.00 |
| 25–50 | 0.20 (0.04–1.05) | 0.22 (0.04–1.23) |
| >50 | 0.90 (0.26–3.16) | 0.59 (0.13–2.59) |
| Not reported | 0.82 (0.26–2.57) | 0.75 (0.21–2.65) |
| Hospital volume | ||
| Low | 1.69 (0.52–5.49) | 2.11 (0.62–7.17) |
| Medium | 1.04 (0.28–3.84) | 1.32 (0.34–5.18) |
| High | 1.00 | 1.00 |
aBenign neoplasm and multinodular colloid goiter
bAdjusted for all factors in table