Table 3.

Test characteristics for treating physician primary impression, before and after “triple scan” (TS).

	Before TS		After TS
	Value	95% CI	Value	95% CI
CHF
Sensitivity, %	73.3	44.9–92.2	100.0	78.2–100.0
Specificity, %	78.6	63.2–89.7	95.2	83.8–99.4
LR positive	3.4	1.8–6.6	21.0	5.4–81.2
LR negative	0.3	0.1–0.8	0.0	0.0–0.5
COPD/Asthma
Sensitivity, %	76.5	50.1–93.2	64.7	38.3–85.8
Specificity, %	80.0	64.4–90.9	93.3	77.9–99.2
LR positive	3.8	2.0–7.5	9.7	2.4–38.7
LR negative	0.3	0.1–0.7	0.4	0.2–0.7
Pneumonia
Sensitivity, %	31.2	11.0–58.7	100.0	78.2–100
Specificity, %	90.2	76.9–97.3	82.9	67.9–92.8
LR positive	3.2	0.98–10.44	5.9	3.0–11.5
LR negative	0.76	0.54–1.08	0.0	0.0–0.5

CHF, congestive heart failure; COPD, chronic obstructive pulmonary disease; LR, likelihood ratio