Table 1.

Diagnostic characteristics of fluoroscopy combined with chest radiography and low-dose CT of the airways for the detection of foreign body. CI, confidence interval (%)

Diagnostic performance	Fluoroscopy and radiography of the chest	Very low-dose CT of the chest
	Value% (95% CI)	Value% (95% CI)
Sensitivity	33 (7 to 70)	100 (66 to 100)
Specificity	96 (89 to 99)	98 (90 to 99)
Positive predicted value	60 (22 to 88)	90 (56 to 98)
Negative predicted value	91 (87 to 94)	100
Accuracy	89 (80 to 95)	98 (91 to 99)