Table 2.
Characteristics associated with the number of index participants needed to interview (NNTI) to identify one additional partner not on antiretroviral therapy at enrollment in univariate analyses
| Index Characteristic | Total (N=783) |
Men (N=402) |
Women (N=381) |
|
|---|---|---|---|---|
| NNTI (p-value) | ||||
| Sex | Men | 5.7 | - | - |
| Women | 2.9 (p<0.001*) |
- | - | |
| Age (years) | 18–25 | 3.4 | 6.3 | 2.7 |
| 26–35 | 3.4 (p=0.981) |
5.7 (p=0.862) |
2.6 (p=0.889) |
|
| 36–45 | 4.2 (p=0.373) |
5.4 (p=0.782) |
3.2 (p=0.551) |
|
| 46–67 | 5.1 (p=0.182) |
6.5 (p=0.946) |
3.5 (p=0.482) |
|
| Relationship status at baseline | Single | 3.5 | 6.6 | 2.6 |
| Married or partnered | 4.8 (p=0.080) |
4.3 (p=0.142) |
5.6 (p=0.001*) |
|
| Divorced or separated | 4.4 (p=0.253) |
7.4 (p=0.746) |
2.9 (p=0.670) |
|
| Widowed | 2.6 (p=0.183) |
6.0 (p=0.825) |
1.5 (p=0.061) |
|
| Enrollment region | Nairobi | 3.2 | 5.9 | 2.4 |
| Coast | 5.6 (p<0.001*) |
5.6 (p=0.827) |
5.6 (p<0.001*) |
|
| Reported current stable housing | No | 4.2 | 9.0 | 2.4 |
| Yes | 3.9 (p=0.717) |
5.4 (p=0.120) |
3.0 (p=0.383) |
|
| Aware of HIV status at enrollment | No | 2.2 | 2.8 | 1.9 |
| Yes | 4.2 (p=0.009*) |
6.3 (p=0.060) |
3.1 (p=0.088) |
|
| Currently on antiretroviral therapy | No | 2.1 | 3.1 | 1.7 |
| Yes | 4.9 (p<0.001*) |
6.9 (p=0.017*) |
3.7 (p<0.001*) |
|
| Currently in a methadone program | No | 3.3 | 4.9 | 2.6 |
| Yes | 10.4 (p<0.001*) |
10.2 (p=0.008*) |
10.7 (p<0.001*) |
|
| Number of years injecting | <5 | 3.3 | 6.5 | 2.5 |
| ≥5 | 5.0 (p=0.005*) |
5.2 (p=0.376) |
4.7 (p=0.002*) |
|
| Shared needles in past month | No | 3.9 | 5.7 | 2.9 |
| Yes | 4.7 (p=0.519) |
7.0 (p=0.750) |
4.1 (p=0.241) |
|
| Ever had transactional sex | No | 5.2 | 6.7 | 2.7 |
| Yes | 3.2 (p<0.001*) |
4.0 (p=0.073) |
3.0 (p=0.737) |
|
*
Statistically significant at p<0.05
Abbreviations: NNTI = Number of Index Participants Needed to Interview