Behavioural Surveillance Surveys - The Wisdom of Whores

ADDITIONAL INFORMATION AND EXAMPLES
OF RECOMMENDED SAMPLING DESIGNS
This appendix provides examples of sampling schemes that are
proposed for some of the key populations based upon the prototype
designs described in Chapter 4. The recommended sampling schemes
for the various sub-populations are summarized in Figure 1.
Figure 1 : Summary of recommended sampling approaches, by sub-population
Sub-population
Recommended sampling approach
Sex workers
Fixed Preferred: Conventional 2-stage cluster sampling
Floating Preferred: Time-location cluster sampling
Alternative: Targeted snowball sampling
Injecting drug users Preferred: Time-location cluster sampling
Alternative: Targeted snowball sampling
Men who have sex with men Preferred: Time-location cluster sampling
Alternative: Targeted snowball sampling
Mobile populations Preferred: Time-location cluster sampling
Youth Preferred: Cluster survey of households
Alternative: Cluster survey of schools, worksites,
youth organizations, and/or other
relevant sites
Sex workers (SW)
One of the initial issues that will have to be
addressed in undertaking BSS is the different
types of sex workers found in many settings.
Many distinctions have been used in different
settings, including brothel-based and floating,
registered and clandestine; high-paid and
low-paid, and “direct” and “indirect” (i.e., sex
workers working in brothels or massage
parlors as opposed to those working as
bartenders or waitresses in bars or restaurants
who also engage in commercial sex). These
are just a few of the distinctions that exist.
Every country has it’s own distinct patterns
for sex work, and these must be understood
before a BSS can be undertaken.
B EHAV I OR A L S U R V EI L L A NC E SURV EY S APPEN DI X 3
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