Table 6.
Post operative 4 h PTH change in PTH and preoperative Vitamin D as predictors of biochemical hypocalcemia
| Parameter | 4 h post operative PTH Value (95% CI) |
Change in PTH Value (95% CI) |
Vitamin D Value (95% CI)e (95% CI) |
|---|---|---|---|
| Cutoff (p value) | ≤ 15.1 (0.017) | ≤ -22.7 (0.05) | ≤ 19.49 (0.074) |
| AUROC | 0.707 (0.589–0.826) | 0.666 (0.508–0.823) | 0.656 (0.488–0.823) |
| Sensitivity | 51.8% (38–65) | 57.1% (43–70) | 67.9% (54–80) |
| Specificity | 100.0% (77–100) | 78.6% (49–95) | 71.4% (42–92) |
| Positive Predictive Value | 100.0% (88–100) | 91.4% (77–98) | 90.5% (77–97) |
| Negative Predictive Value | 34.1% (20–51) | 31.4% (17–49) | 35.7% (19–56) |
| Diagnostic Accuracy | 61.4% (49–73) | 61.4% (49–73) | 68.6% (56–79) |
| Positive Likelihood Ratio | Inf (NaN-Inf) | 2.67 (0.95–7.46) | 2.38 (1.02–5.54) |
| Negative Likelihood Ratio | 0.48 (0.37–0.63) | 0.55 (0.36–0.82) | 0.45 (0.27–0.75) |
| Diagnostic Odds Ratio | Inf (NaN-Inf) | 4.89 (1.23–19.47) | 5.28 (1.46–19.14) |