Page 26 - A Step-By-Step Guide to Questionnaire Validation Research

interview or performing a diagnostic test by using a

specialized machine, especially when there are already

too many patients waiting to be screened.

Therefore, a questionnaire that is specifically

developed for diagnostic research can o en be used for

screening purposes, even though it may not be robust

enough to confirm a diagnosis. This can potentially save

the cost of healthcare for the patients since only those

patients who exhibit a higher cut-off score as determined

by the screening questionnaire will be required to undergo

further diagnostic tests for confirmation. Hence, this type

of questionnaire serves an important function by providing

a necessary complement to the existing diagnostic

procedures (Yunus et. Al., 2013).