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In general, individual questions are preferable to question grids when documenting questionnaire metadata. Question grids become the tool of choice when we are faced with a series of repeating questions such as a food list. A question grid is advantageous to use when:
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Therefore, when a grid is shown in a questionnaire, questions are entered as individual question items instead of question grids, unless it is a multi-column grid.
Note that if the sub-questions have varying response domains (for example the code list is not the same across the sub-questions) then multiple question items must be used. This is regardless of how many sub-questions/statements there are or how long the question items will be. The exception to this is 'breaking off' questions with a mixed response (usually code list plus a text answer) from a group of sub-questions. The sub-questions without a mixed response can be input as a question grid. The mixed response sub-questions are added as separate questions below the grid. See break-off questions for more details.
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