Comparing probability and non-probability sampling methods in Ecstasy research: implications for the internet as a...

Area of Science:

• Public Health Research
• Epidemiology
• Drug Use Studies

Background:

• Ecstasy and related drug (ERD) use is a significant public health concern.
• Internet-based methods offer promising avenues for recruitment and surveys in drug research.
• Methodological concerns regarding representativeness persist with online sampling.

Purpose of the Study:

• To compare demographic and drug use characteristics of ERD users recruited via different methods.
• To assess the representativeness of Internet-based recruitment compared to traditional methods.

Main Methods:

• Surveyed three distinct samples of ERD users in Melbourne, Australia (2004).
• Employed Internet, face-to-face, and probability sampling techniques.
• Compared key demographic and drug use variables across samples.

Main Results:

• Internet, face-to-face, and probability sampling accessed overlapping but not identical ERD user groups.
• Identified specific differences in characteristics between samples obtained through various recruitment strategies.

Conclusions:

• While the Internet is a viable recruitment tool for ERD research, it samples a unique population.
• Sampling method significantly influences the characteristics of the studied ERD user groups.
• Future research should acknowledge and address the limitations and implications of chosen sampling methods.