. Author manuscript; available in PMC: 2014 Jun 2.

Published in final edited form as: Travel Med Infect Dis. 2013 Oct 30;12(3):268–273. doi: 10.1016/j.tmaid.2013.10.010

Table 1.

Patient demographics and test results.

	Patients with malaria (n = 73)	Controls (n = 76)	p-Value
Mean age (years)	31.5 (±12.6)	28.9 (±14.2)	0.24
Sex	55% male	41% male	0.10
RPR+/TPHA+ (true positives)	2/73 (2.7%)	1/76 (1.3%)	0.61
RPR+/TPHA− (false-positives)	6/73 (8.2%)	0/76 (0%)	0.01
Mean parasitemia (par/µl) – false-positive RPR	3572 (95% CI 1527–5616)	n/a
Mean parasitemia (par/µl) – other patients with malaria	5396 (95% CI 3363–7128)	n/a

RPR = rapid plasma reagin; TP-HA = Treponema pallidum hemagglutination test; par/µl = parasites per microliter of whole blood. : “Other patients with malaria” refers to patients with malaria who lack false-positive RPR tests and includes both patients with confirmed syphilis (RPR+/TPHA+) and those without syphilis (RPR−).