Conclusion
Responsiveness, validity and precision are interlinked. However, each
one is important, acting independently in the assessment of the
psychometric characteristics of the instruments (Figure 1). Items can be
removed when the results are not the expected, either in each step or at
last, if the result was not good in all evaluations.
Other psychometric characteristics, although less used, include items
bias, cultural bias, response burden, administrative burden. Alternative
forms can be found in the following: Lohr et
al. 6, Both et
al. 28, Hunt et al. 29and Lord and Novick 30.
In case of a questionnaire construction from de beginning, a more
detailed clinical evaluation should be executed 31,32.