Table 1.

Comparison of non-treponemal RPR tests for syphilis detection

		HBI HiSens Auto RPR test
		Positive	Negative
BD Macro-Vue RPR card	Positive	32	22*
	Negative	2†	56
Number of observed agreements: 88 (78.6% of the observations)
κ=0.565
95% CI 0.422 to 0.709

*20 cases were positive and 2 cases (Nos 1 and 2 in table 2) were negative in the TPPA test.

†The 2 cases (Nos 3 and 4 in table 2) were negative in the TPPA test.

RPR, rapid plasma reagin; TPPA, Treponema pallidum particle agglutination.