Table 4.

Concordance between the quantitative CSF-TRUST-10 and CSF-TRUST-17 tests and the CSF-VDRL test.

	CSF-VDRL									P for χ2	Agreement	Weighted κ	P for weighted κ
	Negative	1:1	1:2	1:4	1:8	1:16	1:32	1:64	1:128
CSF-TRUST-10a										0.066	91.4%	0.939	<0.001
Negative	93	2	0	0	0	0	0	0	0
1:1	0	16	2	0	0	0	0	0	0
1:2	0	0	12	2	0	0	0	0	0
1:4	0	0	1	8	5	0	0	0	0
1:8	0	0	0	0	6	1	0	0	0
1:16	0	0	0	0	0	2	0	0	0
1:32	0	0	0	0	0	0	1	0	0
1:64	0	0	0	0	0	0	0	0	0
1:128	0	0	0	0	0	0	0	0	1
CSF-TRUST-17										0.007	87.6%	0.919	<0.001
Negative	121	4	0	0	0	0	0	0	0
1:1	0	20	4	0	0	0	0	0	0
1:2	0	2	17	2	0	0	0	0	0
1:4	0	0	3	11	9	0	0	0	0
1:8	0	0	0	0	8	0	0	0	0
1:16	0	0	0	0	0	5	2	0	0
1:32	0	0	0	0	0	0	1	0	0
1:64	0	0	0	0	0	0	0	0	0
1:128	0	0	0	0	0	0	0	0	1

Abbreviation: CSF, cerebrospinal fluid; VDRL, venereal disease research laboratory; TRUST, toluidine red unheated serum test.

^aThe results of the CSF-TRUST-10 test were missing for 58 participants.