Table 2.

Demographics and test results of patients with reactive rapid plasma reagin assays.

Number	Age	Sex	RPR titer	TP-HA	Parasitemia (par/µl)	Comments
1	20	Male	1:16	Negative	2900	False-positive RPR
2	23	Male	1:1	Negative	2000	False-positive RPR
3	20	Male	1:16	Negative	3369	False-positive RPR
4	21	Male	1:4	Negative	5567	False-positive RPR
5	62	Male	1:8	Negative	1353	False-positive RPR
6	21	Male	1:1	Negative	6240	False-positive RPR
7	45	Male	1:2	Positive	1253	True case of syphilis; referred for care
8	37	Female	1:4	Positive	7100	True case of syphilis; referred for care
9	60	Female	1:2	Positive	0	True case of syphilis detected in control patient without evidence of malaria; referred for care

RPR = rapid plasma reagin; TP-HA = Treponema pallidum hemagglutination test; par/µl = parasites per microliter of whole blood.