5. RESPONSES AND NON-RESPONDENTS
IMS mailed questionnaires to the 524 institutions in the sample.
The Postal Service returned three of the questionnaires to IMS as
undeliverable due to improper addresses. IMS found correct addresses for
each of the three institutions, and remailed the questionnaires.
IMS received 403 returned questionnaires. An additional questionnaire
was returned by an institution other than the one to which it was
addressed. (The addressee told IMS that it was not a museum, and
therefore forwarded its questionnaire.) We did not use this additional
questionnaire in our analysis.
IMS attempted to contact by telephone each institution that did not
return its questionnaire promptly. It determined on this basis that 36
institutions were not eligible for the survey, because they:
![[CoOL]](/icons/sm_cool.gif){kind=icon}