"separate questionnaires" is a grammatically correct phrase and can be used in written English.
It simply means multiple questionnaires that are distinct or not connected to each other. Example: The participants were asked to fill out separate questionnaires about their personal preferences and experiences.
Two separate questionnaires were given in 13 shopping centers, and 11 main shopping streets in Ankara.
Two separate questionnaires were issued, one questionnaire to PET bottle consumers and one to PET bottle recyclers.
Questionnaires are helpful because each director receives the same question set even if there are separate questionnaires for the board, its committees and individual directors.
There are separate questionnaires for adults who were in Sousse, adults who are family members of those injured or killed, and for under-18s who were in Sousse or are a relative of someone injured or killed.
For every wave, participating children and parents received separate questionnaires and were informed about the anonymous analysis of the data.
The purpose of two separate questionnaires was to collect disturbance information from different areas of concerns of each management level.
At ages 3.5, and 7 the questionnaire was completed by the mother of the child, while at the age of 11 separate questionnaires were completed by both the mother and the child themselves.
When his clients are a couple, Mr. Travis requires each person to fill out a separate questionnaire, he said, although the women are more compliant than the men.
Design: A printed survey of members of the American Academy of Physical Medicine and Rehabilitation Pediatric Rehabilitation Special Interest Group PRSIGG) and a separate questionnaire directed to departments of physical medicine and rehabilitation (PM&R) concerning their PRM training programs.
It cites the findings of a survey sent over the summer to 400,000 active-duty and reserve troops, a separate questionnaire sent to about 150,000 military spouses, the responses submitted to an anonymous online drop box seeking comments, and responses from focus-group participants.
The Self + course group completed a separate questionnaire after their second reliability assessment.
