Table 3.

Sensitivity, specificity, positive predictive value, and negative predictive value of average GRV of ultrasonography for predicting feeding intolerance

Ultrasonographic vs. manual aspiration	Sensitivity (95% CI), %	Specificity (95% CI), %	AUC (95% CI), %	Positive predictive value (95% CI), %	Negative predictive value (95% CI), %	Diagnostic accuracy, %
Feeding intolerance	66.67 (9.43–99.16)	98.15 (90.11–99.95)	0.82 (0.70–0.91)	66.67 (9.43–99.16)	98.15 (90.11–99.95)	96.49
Average GRV (≤0.8 ml/kg)	89.66 (78.83–96.11)	76.58 (71.06–81.51)	0.83 (0.79–0.87)	45.22 (35.92–54.77)	97.17 (93.94–98.95)	78.90
Average GRV (>0.8 ml/kg)	75.00 (47.62–92.73)	92.28 (88.74–94.99)	0.84 (0.79–0.87)	33.33 (18.56–50.97)	98.63 (96.52–99.62)	91.44

GRV: gastric reserve volume; CI: confidence interval; AUC: area under the curve.