Vital Signs survey not representative
Re: “Survey narrows in on addiction crisis,” Oct. 3.
I appreciate the ideas and discussion points of the latest Vital Signs survey conducted by the Victoria Foundation. But the results must not be considered representative of the Greater Victoria area.
Of the estimated 360,000 residents of our area, only 1,498 people completed the Vital Signs survey. While a small, carefully selected sample that is polled using proper methodology can sometimes be considered valid (or representative), the Vital Signs sample was based on online participants; that is, individuals who completed the survey online.
This is a growing sampling technique, mostly because of low cost, but it is highly biased and distorted. Despite these statistical problems, the document provides talking points about our area, but unfortunately it fails to provide reliable and valid data upon which to base policy or political decisions. Rey Carr Victoria