Table 2.
Summary of blood sample collection at the post-intervention assessment
| Thailand | Zimbabwe | Tanzania | KwaZulu-Natal | Soweto | African sites | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CBVCT | SVCT | CBVCT | SVCT | CBVCT | SVCT | CBVCT | SVCT | CBVCT | SVCT | CBVCT | SVCT | |
| Post-intervention assessment participants | ||||||||||||
| All subjects | 4,607 | 4,639 | 8,061 | 7,975 | 5,856 | 5,631 | 6,789 | 6,797 | 9,267 | 9,360 | 29,973 | 29,763 |
| Failure to contact |
347 (7•5%) |
316 (6•8%) |
653 (8•1%) |
479 (6•0%) |
168 (2•9%) |
177 (3•1%) |
175 (2•6%) |
122 (1•8%) |
1,425 (15•4%) |
1,515 (16•2%) |
2,421 (8•1%) |
2,293 (7•7%) |
| Refused to participate |
125 (2•7%) |
117 (2•5%) |
753 (9•3%) |
725 (9•1%) |
61 (1•0%) |
80 (1•4%) |
61 (0•9%) |
55 (0•8%) |
234 (2•5%) |
227 (2•4%) |
1,109 (3•7%) |
1,087 (3•7%) |
| Ineligible | 146 (3•2%) |
154 (3•3%) |
373 (4•6%) |
387 (4•9%) |
485 (8•3%) |
542 (9•6%) |
474 (7•0%) |
560 (8•2%) |
270 (2•9%) |
274 (2•9%) |
1,602 (5•3%) |
1,763 (5•9%) |
| No blood collection consent |
198 (4•3%) |
217 (4•7%) |
344 (4•3%) |
414 (5•2%) |
455 (7•8%) |
465 (8•3%) |
120 (1•8%) |
93 (1•4%) |
187 (2•0%) |
232 (2•5%) |
1,106 (3•7%) |
1,204 (4•0%) |
| Blood sample unavailable |
4 (0•1%) |
3 (0•1%) |
15 (0•2%) |
13 (0•2%) |
3 (0•1%) |
10 (0•2%) |
46 (0•7%) |
37 (0•5%) |
153 (1•6%) |
181 (1•9%) |
217 (0•7%) |
241 (0•8%) |
| Blood sample available |
3,787 (82•2%) |
3,832 (82•6%) |
5,923 (73•5%) |
5,957 (74•7%) |
4,684 (80•0%) |
4,357 (77•4%) |
5,913 (87•1%) |
5,930 (87•2%) |
6,998 (75•5%) |
6,931 (74•0%) |
23,518 (78•5%) |
23,175 (77•9%) |
| Response rates | ||||||||||||
| Stepwisea | 95•0% | 94•6% | 94•3% | 93•4% | 90•1% | 89•1% | 97•3% | 97•9% | 95•5% | 94•6% | 94•3% | 93•8% |
| Cumulativeb | 83•3% | 84•5% | 73•4% | 75•3% | 84•8% | 83•1% | 93•5% | 94•8% | 74•9% | 72•4% | 81•6% | 81•4% |
a
Response rate for obtaining a sufficient blood sample from successfully contacted eligible subjects
b
Cumulative response rate takes into account failure to contact the selected household or individual and confirm eligibility.