Table 1: Recruitment Rates of the Web-Based HIV Behavioral Surveillance System, 6 U.S. Metropolitan Statistical Areas, 2006-2007
|
2006 |
2007 |
DM (MSAs=4) |
RDS (MSAs=3) |
VBS (MSAs=3) |
DM (MSAs=6) |
RDS (MSAs=6) |
No. (%) |
No. (%) |
No. (%) |
No. (%) |
No. (%) |
Recruitment attempts |
34,399 |
462 |
6,634 |
76,294 |
708 |
Screeneda
|
17,774 (52) |
172 (37) |
2,097 (32) |
44,801 (59) |
131 (19) |
Eligibleb
|
4,782 (27) |
84 (49) |
293 (14) |
13,785 (31) |
105 (80) |
Enrolledc
|
3,338 (70) |
75 (89) |
265 (90) |
10,920 (79) |
93 (89) |
Completedd
|
2,528 (76) |
71 (95) |
239 (90) |
7,296 (67) |
72 (77) |
MSM, past 12 monthse
|
2,094 (83) |
67 (94) |
195 (82) |
6,015 (82) |
63 (88) |
MSM = men who have sex with men; DM = direct marketing; RDS = respondent-driven sampling; VBS = venue-based sampling; MSA = metropolitan statistical area
a Screened proportion is among total recruitment attempts.
b Eligible proportion is among total screened.
c Enrolled proportion is among total eligible.
d Completed proportion is among total enrolled.
e Proportion is among total completed. Defined as a man who had sex with at least one man in the past 12 months.