The phrase "a subset of questionnaire" is correct and usable in written English.
It can be used when referring to a smaller group or specific section of questions within a larger questionnaire.
Example: "The survey included a subset of questionnaire items that focused specifically on customer satisfaction."
Alternatives: "a portion of the questionnaire" or "a segment of the questionnaire".
Developing a model which uses a questionnaire to identify likely asthmatics in the general population crucially depends on having a subset of questionnaires from respondents reliably classified as 'asthmatic' or 'non-asthmatic' on which to build the model.
To streamline the in-person exams, a subset of questionnaires were mailed to mothers at least a week prior to their 6- and 12-month exams and participants submitted the completed questionnaires to research assistants at exams.
Finally, the validity of the scoring system was tested in a new data set in the form of a subset of questionnaires and clinical review data selected from the 2001 WYCAP survey.
At the remaining follow-up sessions at 3 (T5) and 6 months (T6) after the index trauma, the severity of PTSD and the presence of other psychopathology symptoms will be re-assessed and a subset of questionnaires will be re-administered.
First, a weighted scoring system was developed based on a subset of adult questionnaires and clinical review data collected in 1995.
A subset of the full questionnaire, consisting of the questions for four (finch, virus, ants/fungus, and human/chimp) of the seven organisms, was used as the pre-visit closed-ended questionnaire (see Table 1).
A subset of patients completed questionnaires about their uncertainties regarding chemotherapy decisions pre- and post-testing.
The BDHS questionnaire includes nine mental health questions, seven of which are a subset of the Self Reporting Questionnaire 20 (SRQ-20), a mental health screening tool developed by WHO [ 34].
Furthermore, we report acceptable test-retest reliability of a subset of items on this questionnaire.
A subset of questions from the questionnaire was selected based on their sensitivity for comparisons between the methodologies.
