Table 4.

Performance of testing

	All tests		FBE		LDH (NHL)		ESR (HL)
Sensitivity	0.42	(31–52)a	0.46	(35–57)	0.28	(15–44)	0.39	(17–64)
Specificity	0.87	(86–89)	0.75	(73–76)	0.89	(87–90)	0.86	(82–89)
PPV	0.09	(7–13)	0.05	(4–7)	0.08	(4–13)	0.11	(5–22)
NPV	0.98	(87–93)	0.98	(97–98)	0.97	(96–98)	0.97	(94–99)

PPV positive predictive value, NPV negative predictive value.

^a 95% confidence interval