Table 1.
Comparison of patient demographics, preoperative biochemical profile, and bone mineral density between those who had normal PTH level 6 months after parathyroidectomy (group A) and those who had elevated PTH 6 months after parathyroidectomy (group B)
| Group A (n = 98) | Group B (n = 63) | P value | |
|---|---|---|---|
| Age of parathyroidectomy (years) | 59.0 ± 13.1 | 65.6 ± 13.8 | .003 |
| Sex | .949 | ||
| Male | 26 (26.5) | 17 (27.0) | |
| Female | 72 (75.5) | 46 (73.0) | |
| Body mass index (kg/m2) | 24.8 ± 4.9 | 23.4 ± 3.7 | .388 |
| Preoperative adjusted calcium level (mmol/L) | 2.86 ± 0.2 | 2.94 ± 0.3 | .020 |
| Preoperative PTH level (pg/mL) | 169.3 ± 257.9 | 249.5 ± 302.6 | <.001 |
| Preoperative creatinine level (umol/L) | 82.0 ± 24.9 | 103.9 ± 59.9 | .015 |
| Preoperative serum alkaline phosphatase (U/L) | 112.8 ± 69.4 | 116.8 ± 78.1 | .898 |
| Preoperative 24-h urine calcium (mmol/day) | 6.7 ± 3.7 | 5.7 ± 3.4 | .150 |
| Preoperative 25OHD3 (ng/mL)a | 29.9 ± 18.1 | 22.2 ± 13.7 | .007 |
| Preoperative bone mineral densityb | |||
| Forearm (g/cm2) | 0.6 ± 0.1 | 0.5 ± 0.1 | .024 |
| Femoral neck (g/cm2) | 0.6 ± 0.1 | 0.6 ± 0.1 | .040 |
| L1–4 lumbar spine (g/cm2) | 0.8 ± 0.2 | 0.8 ± 0.2 | .040 |
PTH parathyroid hormone, 25OHD 3 25-hydroxyvitamin D3
aAvailable in 121 patients
bAvailable in 137 patients