HIV incidence, retention rate, and baseline predictors of HIV incidence and retention in a prospective cohort study of injection drug users in Xinjiang, China.
OBJECTIVE
To determine HIV seroincidence, study participant retention rate, and baseline predictors of HIV incidence and study retention among high-risk injection drug users (IDUs) in Xinjiang, China.


METHODS
A total of 508 eligible seronegative high-risk IDUs were enrolled. Study participants were tested for HIV-1 and counseled at the baseline, 6-month, and 12-month follow-up visits. Sociodemographic and behavioral data were collected during each study visit. The HIV-1 incidence rate and the retention rate were analyzed as a function of sociodemographic, behavioral, and recruitment variables.


RESULTS
At 12 months of follow-up, the HIV-1 incidence rate was 8.8 per 100 person-years (95% CI 6.3-12.0%) and the participant retention rate was 93%. Marital status at baseline was the only predictor of HIV incidence. No baseline variables were predictive of study retention.


CONCLUSIONS
HIV incidence is high among IDUs in Xinjiang, China. Baseline predictors of incidence and retention were minimal. The participant retention rate in this study is promising for the undertaking of future HIV intervention studies.
Zhang
Yuanzhi
Y
Xinjiang Center for Disease Control and Prevention, Urumqi, China.
Shan
Hua
H
Trizzino
Jennifer
J
Ruan
Yuhua
Y
Beauchamp
Geetha
G
Mâsse
Benoît
B
Ma
Jun
J
Rui
Baoling
B
Wang
Jun
J
Liu
Minsheng
M
Wang
Yunxia
Y
He
Yixin
Y
Poundstone
Katharine
K
Jiang
Yan
Y
Jackson
J Brooks
JB
Shao
Yiming
Y
D000293:Adolescent; D000328:Adult; D002681:China / Q000453:epidemiology; D015331:Cohort Studies; D005260:Female; D015658:HIV Infections / Q000453:epidemiology*; D015497:HIV-1; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D015819:Substance Abuse, Intravenous / Q000453:epidemiology* / Q000821:virology*