Adults retained in clinical care in the NA-ACCORD, according to demographic and clinical characteristics, 2008–2010.

Retention defined by the Institute of Medicine's and Department of Health and Human Services' retention indicators.
DHHS: Department of Health and Human Services; Hetero: heterosexual contact; IDU: injection drug use; IOM: Institute of Medicine; MSM: male sexual contact with men.
DHHS Indicator: ≥1 visit in each semester (January–June or July–December), >60 days apart, over a 2-year period.
IOM Indicator: ≥2 visits in each calendar year, >90 days apart, over a 2-year period (this definition was extended from 1 to 2 years for direct comparison with the DHHS indicator).
a: all different from 0, p<0.01;
b: Area under receiver-operating characteristic curves resulting from logistic models accounting for clustering across two years with robust variances adjusted for respective covariates, with “Total” category adjusted for all covariates.
c: At first measurement in 2008 or 2009; d: For ≥6 months in 2008 and 2009 or in 2009 and 2010; e: At last measurement in 2009 or 2010.
All characteristics differed different by the percentages retained across different indicators, χ2 p<<0.001. Percentages may not sum to 100 due to rounding or missing values.
Adults retained in clinical care in the NA-ACCORD, according to demographic and clinical characteristics, 2008–2010.