Table 3

LED test performance for detecting TV among 833 men with and without symptoms and signs depending on presence of schistosomiasis*

No (%) LED+
T vaginalis +T vaginalis − SensitivitySpecificityPositive predictive value
*Excludes 147 men for whom either full data on the questionnaire was not available or who had N gonorrhoeae or C trachomatis or NSU.
Schistosomiasis
Symptoms and/or signs14/16 (88%)87/135 (64%)88%36%14%
No symptoms/signs8/13 (62%)76/138 (55%)62%45%10%
No schistosomiasis
Symptoms and/or signs26/34 (76%)44/119 (37%)76%63%37%
No symptoms/signs24/40 (60%)77/338 (23%)60%77%24%
All men
Symptoms and/or signs40/50 (80%)131/254 (52%)80%48%23%
No symptoms/signs32/53 (60%)153/476 (32%)60%68%17%
Total72/103 (70%)284/730 (39%)70%61%20%