The phrase "a prepared questionnaire" is correct and usable in written English.
You can use it when referring to a questionnaire that has been created and organized in advance for a specific purpose, such as research or surveys.
Example: "Before conducting the interviews, we distributed a prepared questionnaire to gather initial data from the participants."
Alternatives: "a pre-made questionnaire" or "a ready questionnaire".
All outpatients with episodic CH according to the criteria of ICHD-II who were consecutively seen for the first time from October 2010 to April 2012 at a headache centre were interviewed by phone using a specifically prepared questionnaire.
Participants were underwent a standardized physical examination, anthropometric measurements and a 12-lead electrocardiogram, based on the prepared questionnaire for the medical record.
The assessments were done according to the questionnaire with 26 items on the earlier prepared questionnaire on paper per park (see Table 1).
In the collected statistical sample from the questionnaires, at least 12 professionals and experts from the human resource department have confirmed the validity of the prepared questionnaire for this research.
The validity of the questionnaire was ensured by mailing the prepared questionnaire to experts in the field.
Functionally independent subjects were selected in order to collect accurate information from the prepared questionnaire and life satisfaction index.
Data were extracted from the patients' medical records and from hospital computerized databases according to a pre-prepared questionnaire.
The prepared questionnaires were pretested in a public hospital not included in the study.
In this study, the researchers collected data using prepared questionnaires to interview patternmakers of thirteen Korean menswear brands, which were registered on the Korean fashion brand annual 2012/2013.
However, all three were trained before the study, were asked to conduct each examination according to a prepared manual, and completed a standardized questionnaire to gather identical information for each patient.
