In a qualitative study, which usually involves interviews, the instrumentation is an interview protocol – a pre-determined set of questions that every participant is asked that are based on the primary research questions. A qualitative interview should contain no less than 10 open-ended questions and take no less than 1 hour to administer to qualify as “robust” research.
In-depth knowledge about a subject may generate a number of questions. It then becomes necessary to ask whether these questions can be answered through one study or if more than one study needed. Additional research questions can be developed, but several basic principles should be taken into consideration. All questions, primary and secondary, should be developed at the beginning and planning stages of a study. Any additional questions should never compromise the primary question because it is the primary research question that forms the basis of the hypothesis and study objectives. It must be kept in mind that within the scope of one study, the presence of a number of research questions will affect and potentially increase the complexity of both the study design and subsequent statistical analyses, not to mention the actual feasibility of answering every question. A sensible strategy is to establish a single primary research question around which to focus the study plan. In a study, the primary research question should be clearly stated at the end of the introduction of the grant proposal, and it usually specifies the population to be studied, the intervention to be implemented and other circumstantial factors.
Primary research question as the title
A primary research questionnaire can be used for several purposes. This is to be administered directly on the target group through face to face interview, focal interviews, etc. The following sample primary research questionnaire finds out the nutrition and health of a family.