Page 24 - A Step-By-Step Guide to Questionnaire Validation Research

knowledge level of the respondents in order to determine

the rank of each respondent based on his/her knowledge

score, and such ordinal data can subsequently be used for

research purposes (Bujang & Tan-Hui, 2022).

1.2.3 Questionnaire Type 3: Questionnaire for screening or

for a diagnostic assessment

The third type of questionnaire is designed for

screening or diagnostic assessment. This type of

questionnaire is also related to specific facts or knowledge

about a subject because the parameter is o en defined by

two distinct criteria, o en in a mutually exclusive or

binary form such as ‘with disease’ or ‘without disease’. All

the questions in this type of questionnaire will directly

correspond to the outcome, and hence this type of

questionnaire will aim to screen for a probable or likely

association between the variable and the outcome. Hence,