Table 1 Overview of predefined quantitative goals regarding the preferred population and the goal rationale

1

Minimum of 25 persons per test event

Number of participants during the pre-test (N = 25) and estimated capacity to include in all stops in 4 h

2

No selective reach

Sociodemographics of participants reflects the area’s composition based on sex, age, and migratory background [18]

3

70% first-time HIV testers

• Two national representative studies from The Netherlands and Britain that reported 16–25% were tested at least once for HIV (i.e., 75–84% never tested) [23, 24]

• We downscaled the proportion of first-time testers to 70%, because our pilot was conducted in a highly urbanized area that harbors a relatively high proportion of non-western residents, which is associated with higher proportions of people who have been tested at least once [23, 24]

4

80% not recently tested for HIV (i.e., > 12 months)

Two national representative studies from The Netherlands and Britain that reported 14–23% of the population was tested in the last year (i.e., 77–86% not recently tested) [23, 24]

5

HIV positivity of 0.33–0.66%

Comparable to the area’s HIV positivity (0.33–0.66%) [17]