The Exposure Assessment in Current Time Study: Implementation, Feasibility, and Acceptability of Real-Time Data Collection in a Community Cohort of Illicit Drug Users
Table 1
Characteristics of EXACT participants by trial.
Characteristic
All trials ()
Trial 1 ()
Trial 2 ()
Trial 3 ()
Trial 4 ()
Sociodemographic variables
Median age, yrs (IQR)
48.5 (43.3–52.9)
48.5 (41.8–52.3)
47.4 (40.8–50.4)
47.9 (43.5–53)
51.6 (45.6–55.7)
African American (%)
90
90
79
100
91
Male (%)
52
42
43
64
64
High school education (%)
41
39
50
33
41
Ever married (%)
39
42
32
41
41
Income, yearly <$5000* (%)
78
83
89
71
64
Had insurance* (%)
85
71
79
96
100
Homeless* (%)
8
6
14
4
9
Substance use variables*
Cigarette use (%)
83
77
75
93
91
Alcohol use (%)
65
61
61
68
73
Marijuana use (%)
25
39
21
14
23
Heroin or cocaine use (%)
61
55
46
89
55
Cocaine use (%)
46
42
36
64
41
Heroin use (%)
46
52
36
57
36
Speedball (%)
24
21
15
38
23
Clinical variables
Depressive symptoms (CESD > 23) (%)
24
29
25
21
18
Methadone treatment* (%)
24
16
21
21
41
Hepatitis C virus seropositive (%)
86
84
79
89
95
HIV positive (%)†
59
16
32
100
100
Median CD4 (IQR)†
360.5 (239–529)
451 (380–529)
328 (242–404)
327.5 (244–437)
414.5 (166–612)
HIV viral load > 500 copies/mL (%)†
55
60
78
61
36
Represents self-reported exposure during the prior 6 months. HIV+ status was an inclusion criteria for Trials 3 and 4; CD4 and viral load tested on HIV-positive participants only.
