Assessing possible selection bias in a national voluntary MS longitudinal study in Australia.

The article discusses a study on the assessment of the impacts of multiple sclerosis (MS) in the lives of the MS disease carriers in Australia. The study uses a cost-effective assessment strategy by conducting surveys from the volunteer members of an MS registry. It says that the strategy may exhibit different outcomes resulting to the prevalence of volunteer bias. It adds that the Australian Multiple Sclerosis Longitudinal Study (AMSLS) was determined essential in the country's MS population.