6 Written questions
6 Multiple choice questions
- -face validity
- does the questionnaire represent what is being studied?
- does the questionnaire incorporate all the important aspects of the phenomenon under study?
- the degree to which the instrument measures what it is supposed to measure
- Instrument variability
- different tool/person measuring the same thing
-has the largest variability
5 True/False questions
improve reliability and validity → -calibration
-questionnaire standardisation/validation (qualitative research)
intra → same tool/observer
Validity → subjective judgment about measurements contained in the questionnaire are reasonable
coefficient of variation → does the questionnaire represent what is being studied?
standardization → adjust a measuring instrument to be equivalent to the standard