Table 1. Demographic characteristics of the 865 HIV infected individuals.

Serological test results of syphilis.

Characteristic	Subjects No, (%)
Gender
Male	709 (82%)
Female	156 (18%)
Mean age (years)	40.7±12.3 (range 17–81)
Male	40.2±12.1 (range 17–81)
Female	43.1±12.9 (range 18–75)
Ethnicity
Han	753 (87.1%)
Other ethnicities	112 (12.9%)
HIV transmission route
Heterosexual	508 (58.7%)
MSM	225 (26.0%)
Others (injection drug use, blood, unknown)	132 (15.3%)
AIDS stage
No	536 (62.0%)
Yes	328 (37.9%)
Uncertain	1 (0.1%)