Table 2:

Partner characteristics (unique individuals)

	Partner participants (n=3323)
Age, years	33 (27–39)
Sex
Female	975 (29%)
Male	2348 (71%)
Marital status*
Married	862 (26%)
Unmarried	2457 (74%)
Region
Nairobi	1721 (52%)
Coast	1602 (48%)
Violence in past year
Physical	1169 (35%)
Sexual	243 (7%)
Threatened	770 (23%)
Relationship to index participant†
Injecting partners	2342 (70%)
Sexual partners‡	597 (18%)
Injecting and sexual partners	382 (11%)
Sexual partner’s relationship to index (reported by index)§
Spouse	229 (18%)
Girlfriend or boyfriend	724 (56%)
Casual sexual partner	133 (10%)
Index paid partner for sex	163 (13%)
Partner paid index for sex	43 (3%)
Days from naming by index to HIV and HCV testing
Injecting partners	8 (3–24)
Sexual partners	15 (4–65)
Injecting and sexual partners	9 (3–29)
Risk behaviours
Use of any drugs, ever	2758(83%)
Injection drug use, ever	2482 (75%)
Sexual encounters in past month	2 (0–7)
Lifetime sexual partners	10 (5–23)
Condom use during last sexual intercourse¶	1410 (42%)
Transactional sex, ever||	2267 (68%)
HIV and HCV data
HCV antibody positive	393 (12%)
HCV viraemia	213 (6%)
Previously treated with direct-acting antivirals	52 (2%)
HIV positive	597 (18%)
Enrolled in HIV care	480 (14%)
On antiretroviral therapy	455 (14%)
Viral suppression of HIV	358 (70%)**

Data are n (%) or median (IQR).

^*Data were missing for four participants.

^†Data were missing for two participants.

^‡57% of people named as sexual partners had injected drugs (43% had injected in the last month).

^§The denominator for these percentage calculations is 1292 (sexual partners named by multiple indexes are counted more than once).

^¶Defined as vaginal, oral, or anal penetrative sex.

^||Defined as giving or receiving money or material goods in exchange for sex.

^**The denominator for this percentage calculation is 512 (of the 597 partners with HIV, viral load data were unavailable for 85).