Diagnostic Validity of Clinical Signs Associated with a Large Exophoria at Near

Table 4

Diagnostic validity for each test using cut-offs obtained with ROC curves.

Test	Cut-off with ROC curve	Sensitivity; (CI 95%)	Specificity; (CI 95%)	LR+; (CI 95%)	LR−; (CI 95%)
NPC recovery	≥8.25 cm	0.85; (0.69–1)	0.82; (0.61–1)	4.79; (1.69–14)	0.19; (0.08–0.48)
BAF	≤8.25 cpm	0.88; (0.75–1)	0.79; (0.63–0.94)	4.14; (2.12–8.09)	0.15; (0.06–0.39)
NPC break	≥5.35 cm	0.73; (0.56–0.89)	0.91; (0.80–1)	8.00; (2.67–24)	0.30; (0.17–0.53)
MAF	≤8.25 cpm	0.70; (0.52–0.87)	0.94; (0.84–1)	12.00; (2.95–45)	0.32; (0.19–0.55)
VF	≤14.75 cpm	0.70; (0.52–0.87)	0.70; (0.52–0.87)	2.30; (1.31–4.04)	0.25; (0.25–0.76)
MEM	≤0.63 D	0.73; (0.56–0.89)	0.55; (0.36–0.73)	1.60; (1.04–2.46)	0.50; (0.26–0.95)
NRA	≤2.38 D	0.76; (0.60–0.92)	0.52; (0.33–0.70)	2.30; (1.31–4.04)	0.43; (0.25–0.76)

LR+: positive likelihood ratio, LR−: negative likelihood ratio, CI: confidence interval, NPC: near point of convergence, BAF: binocular accommodative facility, MAF: monocular accommodative facility, VF: vergence facility, MEM: monocular estimated method, NRA: negative relative accommodation, cpm: cycles per minute, D: diopter.