TABLE II.

Diagnostic characteristics of peanut SPT, peanut-sIgE, and sIgE to peanut components

Characteristic	Sensitivity (95% CI)	Specificity (95% CI)	LR+	LR−	ROC AUC
SPT wheal size 3 mm	92% (78%–98%)	88% (84%–91%)	7.68	0.09	0.90 (0.85–0.95)
SPT wheal size 8 mm	73% (56%–85%)	99% (96%–99%)	51.81	0.27	0.87 (0.78–0.93)
Ara h 2-sIgE (0.1 kUa/L)	94% (81%–99%)	98% (95%–99%)	43.29	0.06	0.96 (0.92–1.0)
Ara h 2-sIgE (0.35 kUa/L)	89% (74%–96%)	99% (97%–99.8%)	81.48	0.11	0.94 (0.89–0.99)
Ara h 2-sIgE (1 kUa/L)	72% (56%–84%)	99% (97%–99.9%)	99.31	0.28	0.86 (0.79–0.93)
Peanut-sIgE (0.1 kUa/L)	100% (89%–100%)	78% (73%–83%)	4.60	0.00	0.89 (0.86–0.92)
Peanut-sIgE (0.35 kUa/L)	97% (85%–100%)	86% (81%–89%)	6.7	0.03	0.91 (0.88–0.95)
Ara h 1-sIgE (0.1 kUa/L)	58% (42%–73%)	90% (86%–93%)	5.73	0.46	0.74 (0.66–0.83)
Ara h 3-sIgE (0.1 kUa/L)	33% (20%–50%)	94% (91%–97%)	6.04	0.71	0.64 (0.56–0.72)
Ara h 8-sIgE (0.1 kUa/L)	3% (0%–0.15%)	100% (98%–100%)	—	0.97	0.51 (0.49–0.54)

LR+, Positive likelihood ratio; LR−, negative likelihood ratio; ROC, receiver-operator characteristic.