Table 2.

Test characteristics across a range of cut-points of plasma β-hydroxybutyrate (BOHB) in the prediction of diabetic ketoacidosis among pediatric emergency department patients.

BOHB Cut-point (mmol/L)	Sensitivity (%)	Specificity (%)	Positive Predictive Value (%)	Negative Predictive Value (%)	Correctly Classified (%)	LR+	LR−
≥ 1	98.3	47.6	44.1	98.5	62.6	1.88	0.04
≥ 2	96.6	65.3	54.3	97.9	74.6	2.78	0.05
≥ 3	94.3	79.9	66.4	97.1	84.2	4.69	0.07
≥ 4	86.9	89.0	77.3	94.2	88.4	7.90	0.15
≥ 5	77.3	94.5	85.5	90.8	89.4	14.04	0.24
≥ 6	64.8	97.9	92.6	86.7	88.1	30.08	0.36
≥ 7	48.3	99.0	95.5	81.8	84.0	50.47	0.52
≥ 8	30.7	100.0	100.0	77.4	79.5	---	0.69

Likelihood ratio positive (LR+); Likelihood ratio negative (LR-)s