Table 2 Methods used in behavioural surveillance: number of countries using as main method(s).

Representative designs

Sexuality module in general health surveys

6

14

2

2

Specific KABP survey

8

10

Comprehensive sexuality/reproductive health surveys

8

6

1

Addiction focused surveys

2

5

Surveys using respondent driven sampling for hard-to-reach populations

2

2

1

Non representative designs

Service based data collection

11

5

9

3

1

Internet surveys

1

14

2

Venue-based/community based surveys

12

8

4

3

5

Cohort studies

2