Table 1.
Referring participants with any presenting contact, a newly HIV-diagnosed presenting contact, or an HIV-negative presenting contact, comparing the combination intervention versus passive partner notification alone (N=2,028)
| Referring participant characteristic | Combination intervention (N=738) vs. pPN (N=1,290) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Any presenting contact |
Newly HIV-diagnosed presenting contact |
HIV-negative presenting contact |
|||||||
| Combo* | pPN | PD (95% CI) | Combo | pPN | PD (95% CI) | Combo | pPN | PD (95% CI) | |
| N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | ||||
| Overall | 214 (29) | 188 (15) | 0.14 (0.11, 0.18) | 37 (5) | 37 (3) | 0.02 (0.00, 0.04) | 109 (15) | 87 (7) | 0.08 (0.05, 0.11) |
| Enrollment type | |||||||||
| Contact | 29 (28) | 3 (4) | 0.25 (0.15, 0.34)† | 6 (6) | 1 (1) | 0.05 (0.00, 0.10) | 16 (16) | 3 (4) | 0.12 (0.04, 0.20) |
| Index | 185 (29) | 185 (15) | 0.14 (0.10, 0.18)† | 31 (5) | 36 (3) | 0.02 (0.00, 0.04) | 93 (15) | 84 (7) | 0.08 (0.05, 0.11) |
| HIV diagnosis status | |||||||||
| New diagnosis | 121 (25) | 124 (14) | 0.11 (0.07, 0.16)† | 27 (6) | 30 (3) | 0.02 (0.00, 0.05) | 62 (13) | 56 (6) | 0.07 (0.03, 0.10) |
| Previous diagnosis | 93 (36) | 64 (16) | 0.20 (0.13, 0.27)† | 10 (4) | 7 (2) | 0.02 (-0.01, 0.05) | 47 (18) | 31 (8) | 0.10 (0.05, 0.16) |
| Sex | |||||||||
| Female | 127 (29) | 90 (12) | 0.17 (0.13, 0.22)† | 23 (5) | 16 (2) | 0.03 (0.13, 0.22) | 67 (15) | 46 (6) | 0.09 (0.06, 0.13) |
| Male | 87 (29) | 98 (19) | 0.10 (0.04, 0.16)† | 14 (5) | 21 (4) | 0.01 (0.04, 0.16) | 42 (14) | 41 (8) | 0.06 (0.02, 0.11) |
| Age | |||||||||
| 18–24 years | 51 (27) | 35 (11) | 0.17 (0.09, 0.24) | 7 (4) | 5 (2) | 0.02 (-0.01, 0.05) | 34 (18) | 18 (6) | 0.13 (0.07, 0.19)† |
| ≥25 years | 162 (30) | 153 (16) | 0.14 (0.09, 0.18) | 29 (5) | 32 (3) | 0.02 (0.00, 0.04) | 75 (14) | 69 (7) | 0.07 (0.03, 0.10)† |
| Marital status ‡ | |||||||||
| Not married | 49 (18) | 18 (5) | 0.13 (0.08, 0.18) | 8 (3) | 5 (1) | 0.02 (-0.01, 0.04) | 32 (12) | 13 (3) | 0.08 (0.04, 0.13) |
| Married | 162 (36) | 167 (19) | 0.17 (0.12, 0.22) | 28 (6) | 32 (4) | 0.03 (0.00, 0.05) | 77 (17) | 72 (8) | 0.09 (0.05, 0.13) |
| >1 recent sex partner § | |||||||||
| Yes | 35 (39) | 26 (17) | 0.22 (0.10, 0.33) | 4 (4) | 8 (5) | −0.01 (-0.06, 0.04) | 24 (27) | 15 (10) | 0.17 (0.06, 0.27)† |
| No | 176 (28) | 159 (14) | 0.13 (0.09, 0.17) | 32 (5) | 29 (3) | 0.02 (0.00, 0.04) | 85 (13) | 70 (6) | 0.07 (0.04, 0.10)† |
Abbreviations: CI = confidence interval; Combo = combination intervention; PD = prevalence differences; pPN = passive partner notification
Presenting sexual contacts: n=5 newly diagnosed with AHI, n=26 newly diagnosed as HIV-seropositive, n=74 previously HIV-diagnosed, n=83 HIV-negative; presenting social contacts: n=7 newly diagnosed as HIV-seropositive, n=21 previously HIV-diagnosed, n=59 HIV-negative; presenting contacts with missing referral type: n=1 newly diagnosed as HIV-seropositive, n=1 HIV-negative.
P-value <0.15 for likelihood ratio tests from binomial models assessing whether each exposure-outcome relationship varied by referring participant characteristic.
Not married includes never married, separated, divorced, or widowed.
Recent = previous 4 weeks; Yes = ≥2 sexual partners; No = 0–1 sexual partners; eligibility criteria included having had any sexual activity within the previous 6 months.