Table 1

Characteristics of the individuals on the HIV test database (initially tested in the period 1 January 1988 to 31 December 2009, including testing of stored sera back to 1980), according to initial test result and multiple-tested status

All HIV-tested persons (col%)First testing HIV positive (%*)First testing HIV negative (col%)First testing HIV negative and >1 test (%)
N412 994 (100)4943 (1.2)408 051 (100)59848 (14.7)
Sex
 Male232 482 (56.3)3339 (1.4)229 143 (56.2)36 627 (16.0)
 Female176 420 (42.7)1571 (0.9)174 849 (42.9)23 180 (13.3)
 NK4092 (1.0)33 (0.8)4059 (1.0)41 (1.0)
Risk group
 MSM (only reported risk)26 006 (6.3)1250 (4.8)24 756 (6.1)7034 (28.4)
 MSM (other risk(s) reported)1699 (0.4)22 (1.3)1677 (0.4)1663 (99.2)
 Heterosexual (only reported risk)278 527 (67.8)1724 (0.6)276 803 (67.8)34 380 (12.4)
 Heterosexual (other risk(s) reported)5391 (1.3)56 (1.0)5335 (1.3)5312 (99.6)
 IDU (only reported risk)26 565 (6.4)542 (2.0)26 023 (6.4)5134 (19.7)
 IDU (other risk(s) reported)3408 (0.8)42 (1.2)3366 (0.8)3357 (99.7)
 Other/not known/NA14 795 (3.6)67 (0.5)14 728 (3.6)2455 (16.7)
Mean age at initial test, in years (SD)30.7 (12.0)34.0 (11.4)30.7 (12.0)30.1 (12.1)
  • Category ‘other’ includes blood product recipient and accidental or occupational exposure.

  • * Percentage of all HIV-tested persons.

  • Percentage of all first testing HIV negative.

  • Col%, column percentage; IDU, injecting drug user; MSM, men who have sex with men; NK, not known; NA, not applicable.