Table 5.
Risk factors identification of symptoms in patients with normal serum Ca
| Variable | B-S- | B-S+ | Univariate | Multivariate | ||
|---|---|---|---|---|---|---|
| Frequency | Frequency/% | P | P | OR (95% CI) | ||
| Sex | Male | 46 | 2/3.7 | 0.064 | 0.09 | – |
| Female | 103 | 17/9.0 | ||||
| Age | <55 | 126 | 14/6.8 | 0.322 | – | – |
| ≥55 | 23 | 5/13.5 | ||||
| Pre-Ca/mmol·L−1 | 2.00–2.34 | 52 | 11/10.2 | 0.051 | 0.09 | – |
| 2.34–2.60 | 97 | 8/6.0 | ||||
| Extent of surgery | Unilateral | 23 | 0/0.0 | 0.079 | 0.176 | – |
| Bilateral | 126 | 19/8.7 | ||||
| CND | Unilateral | 42 | 3/5.3 | 0.250 | – | – |
| Bilateral | 107 | 16/8.6 | ||||
| LND | No | 128 | 16/8.4 | 0.738 | 0.875 | – |
| Yes | 21 | 3/5.8 | ||||
| VD deficiency | No | 99 | 11/7.1 | 0.460 | – | – |
| Yes | 50 | 8/9.2 | ||||
| Hypoparathyroidism | No | 96 | 5/4.2 | 0.001 | 0.002 | 6.055 (1.948, 18.825) |
| Yes | 53 | 14/11.4 | ||||
| Parathyroid number | No | 32 | 5/9.6 | 0.571 | – | – |
| Yes | 117 | 14/7.4 | ||||
| Auto-T | No | 119 | 15/8.2 | 1.000 | – | – |
| Yes | 30 | 4/6.8 | ||||
| Hypomagnesemia | No | 131 | 12/6.2 | 0.010 | 0.004 | 5.478 (1.724, 17.403) |
| Yes | 18 | 7/14.6 | ||||
Abbreviations: B-S-, patients with normal serum and without symptoms; B-S+, patients with normal serum but with symptoms; CND, central lymph node dissection; LND, lateral lymph node dissection; VD, vitamin D; Auto-T,aAutotransplantation; Pre, preoperative; Po, postoperative.