TABLE 2.

Diagnosis of primary syphilis obtained by dark-field microscopy versus that obtained by the T. pallidum real-time PCRa

T. pallidum real-time PCR resultNo. of cases with the following dark-field microscopy result:
+
+4746
7616
  • a The data are for a total of 716 cases. The sensitivity of the T. pallidum real-time PCR was 87.0%, and its specificity was 93.1%. The kappa value was 0.601, which indicates fair agreement between the results of the two tests.