Table 3.

Concordance between test results and IHC results and sensitivity and specificity of the different tests

	Coefficient k (95% CI)	Sens (%)	Spec (%)
History and symptoms	−0·4 (−0·61/0·53)	62·5	0
Effusion	−0·52 (−0·99/−0·05)	50	0
SPE	0·25 (−0·07/0·55)	37·5	50
AGP	1·00 (1·00/1·00)	100	100
Serology or PCR	−0·08 (−0·71/0·55)	nc	nc
Postmortem examination or histology	0·09 (−0·11/0·29)	37·5	100

SPE serum protein electrophoresis, AGP α1‐acid glycoprotein, CI confidence interval, Sens sensitivity, Spec specificity, nc not calculable