City Services Satisfaction Survey 2012 City Services Satisfaction Survey | Page 10

DETAILED FINDINGS
Caution On Year-To-Year Comparisons
With the change from telephone to Internet methodology for this year’s survey, it was
recognized that there might be differences in year-to-year comparisons that could not
be explained by anything other than that change.
Some of the factors that might result in differences include: different sample;
respondents looking at or reading questions rather than listening; self-
administered questions vs. interaction with an interviewer; the type of person
willing to participate in an Internet survey vs. someone willing to participate in a
phone survey; and many other possible factors, including unknown factors.
Especially for the first year, comparability with previous waves may be lost to some
extent. Unexplained differences were in fact seen in a number of year-to-year
comparisons. They have generally been presented here for informational purposes,
without attempted explanation. For all these reasons, year-to-year comparisons should
be interpreted with caution.
Decision Analyst, Inc.
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