Beyond the use of random telephone number selection, no attempt was made to have this initial pilot be representative of the region as a whole. For this phase of testing, each telephone number in the sample received no more than five attempts at contact before being discarded. This strategy was selected to maximize the number of respondents and minimize the effort to contact them. Data from this initial pilot are, therefore, useful for revealing the response properties of the survey items, but not to be considered an assessment of the distribution of attitudes in the community at large.
Final Survey
The development process described above resulted in a short survey for characterizing asthma knowledge, attitudes, and beliefs among adults in the general public. more

The initial pool of 58 items was reduced to 32 by choosing to retain those items with the highest degree of content validity and other survey performance characteristics (appropriate variation and floor/ceiling distribution). These included 21 true/false items and 11 Likert-scale items. The initial testing of this instrument included both self-administered and interviewer-administered versions. The survey administration time was < 10 min.
Step 4. Testing of the Introduction
It is well known that the choice of words in an introduction to a survey can influence a person’s willingness to participate. For the CCAS-32, it was hypothesized that introducing it as an “asthma survey” would attract a greater proportion of persons with asthma. Since the goal of the survey was to evaluate the perceptions of the general public, this type of respondent bias would be undesirable. Therefore, a second version of the survey introduction was created. In this version, the CCAS-32 was introduced as a survey about “health and health care.”