Table 2.
Hypothetical targeting strategies to evaluate the number of HIV sero-conversions relative to the size of a given geographical area
| Area km2 (% total) | Person-years (% total) | HIV sero-conversions (% total) | Effectiveness ratioa | |
|---|---|---|---|---|
| High-risk clustersb | 29.9 (6.8%) | 10763 (15.2%) | 550 (23.8%) | 3.5 |
| Communities within 2 km of National Road | 35.8 (8.2%) | 22641 (32.1%) | 866 (37.5%) | 4.6 |
| Study area | 438.1 (100%) | 70534 (100%) | 2311 (100%) | 1.0 |
a
The ratio of % sero-conversions targeted to % area covered
b
Only high-risk clusters identified by the Tango flexible scan-statistic (Figure 3) targeted.