Partner and partnership characteristics, by index client (IC) subgroup (n=8448)
| Characteristics | All named partners n (col %) | Partners of ICs with recent HIV diagnosis* n (col %) | Partners of ICs with established HIV diagnosis† n (col %) | P value‡ | Partners of PWID ICs n (col %) | Partners of MSM ICs n (col %) | P value§ |
| Total count | 8448 | 2931 | 5517 | 1330 | 153 | ||
| Age (median, IQR) | 38 (31–45) | 37 (30–44) | 38 (32–45) | <0.001 | 38 (32–44) | 34 (26.5–41) | 0.21 |
| Partner sex | |||||||
| Male | 4390 (52.0) | 1444 (49.3) | 2946 (53.4) | <0.001 | 534 (40.2) | 136 (88.9) | <0.001 |
| Female | 4058 (48.0) | 1487 (50.7) | 2571 (46.6) | 796 (59.8) | 17 (11.1) | ||
| Type of partnership | |||||||
| Sexual | 7490 (88.7) | 2494 (85.1) | 4996 (90.6) | <0.001 | 890 (66.9) | 151 (98.7) | <0.001 |
| Needle sharing | 391 (4.6) | 165 (5.6) | 226 (4.1) | 391 (29.4) | 0 (0.0) | ||
| Biological child | 567 (6.7) | 272 (9.3) | 295 (5.3) | 49 (3.7) | 2 (1.3) | ||
| Partner disposition | |||||||
| IPV concern (partner not contacted) | 27 (0.3) | 12 (0.4) | 15 (0.3) | <0.001 | 0 (0.0) | 0 (0.0) | <0.001 |
| Partners already known HIV+ and enrolled on ART | 1327 (15.7) | 280 (9.6) | 1047 (19.0) | 85 (6.4) | 26 (17.0) | ||
| Partners already known HIV+ but not already linked to ART | 162 (1.9) | 80 (2.7) | 82 (1.5) | 31 (2.3) | 1 (0.7) | ||
| Partners newly diagnosed with HIV | 976 (11.6) | 651 (22.2) | 325 (5.9) | 242 (18.2) | 22 (14.4) | ||
| Partners newly diagnosed HIV negative | 4045 (47.9) | 1225 (41.8) | 2820 (51.1) | 820 (61.7) | 69 (45.1) | ||
| Partners not reached within 60 days | 1911 (22.6) | 683 (23.3) | 1228 (22.3) | 152 (11.4) | 35 (22.9) | ||
| Partner notification method¶ | |||||||
| Patient referral | 5119 (72.2) | 1842 (69.8) | 3277 (73.6) | 0.005 | 889 (71.4) | 88 (69.3) | 0.15 |
| Provider referral | 554 (7.8) | 217 (8.2) | 337 (7.6) | 90 (7.2) | 10 (7.9) | ||
| Contract referral | 70 (1.0) | 32 (1.2) | 38 (0.9) | 8 (0.6) | 1 (0.8) | ||
| Joint referral | 1351 (19.0) | 548 (20.8) | 803 (18.0) | 258 (20.7) | 28 (22.0) | ||
*ICs with recent HIV diagnosis are those with up to 6 months from HIV diagnosis to date when IT was accepted.
†ICs with established HIV diagnosis are those with more than 6 months from HIV diagnosis to date when IT was accepted.
‡P value for comparison of partnership attributes among ICs with recent versus established HIV diagnoses, based on Wilcoxon rank-sum test (for IC age) or χ2 test of independence (for all other characteristics).
§P value for comparison of partnership attributes among key population (PWID or MSM) versus non-key population IC subgroups, based on Wilcoxon-rank sum test (for IC age) or χ2 test of independence (for all other characteristics).
¶Among partners with no IPV concern and not already known HIV+ and enrolled on ART.
ART, antiretroviral therapy; IPV, intimate partner violence; MSM, men who have sex with men; PWID, people with current or past injection drug use.