Term Definition
Fact sheet
A sheet, pamphlet, or brochure that provides important information about the study to assist respondents in making an informed decision about participation. Elements of a fact sheet may include the following: the purpose of the study, sponsorship, uses of the data, role of the respondent, sample selection procedures, benefits and risks of participation, and confidentiality.
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Factual judgment question
A question that requires respondents to remember autobiographical events and use that information to make judgments. In principle, such information could be obtained by other means of observation, such as comparing survey data with administrative records, if such records exist. Factual judgment questions can be about a variety of things, such as figure-based facts (e.g., date, age, weight), events (e.g., pregnancy, marriage), and behaviors (e.g., smoking, media consumption).
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Factual question

A question that aims to collect information about things for which there is a correct answer. In principle, such information could be obtained by other means of observation, such as comparing survey data with administrative records. Factual questions can be about a variety of things, such as figure-based facts (date, age, weight), events (pregnancy, marriage), and behaviors (smoking or media consumption).

Example: Do you smoke?

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Fitness for intended use
The degree to which products conform to essential requirements and meet the needs of users for which they are intended. In literature on quality, this is also known as "fitness for use" and "fitness for purpose."
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Fixed panel design

A longitudinal study which attempts to collect survey data on the same sample elements at intervals over a period of time. After the initial sample selection, no additions to the sample are made.

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Synonyms - fixed panel
Fixed panel plus birth

A longitudinal study in which a panel of individuals is interviewed at intervals over a period of time and additional elements are added to the sample.

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Flow chart
A method used to identify the steps or events in a process. It uses basic shapes for starting and ending the process, taking an action, making a decision, and producing data and documentation. These are connected by arrows indicating the flow of the process. A flow chart can help identify points at which to perform quality assurance activities and produce indicators of quality that can be used in quality control.
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Focus group
Small group discussions under the guidance of a moderator which can be used to explore topics, develop topics and items for questions.It is often used in qualitative research to test survey questionnaires and survey protocols.
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frame (Sampling frame)

A list or group of materials used to identify all elements (e.g., persons, households, establishments) of a survey population from which the sample will be selected. This list or group of materials can include maps of areas in which the elements can be found, lists of members of a professional association, and registries of addresses or persons.

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Frequency format

A response format requiring the respondent to select the option that best describes the frequency in which certain behaviors occur.

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Synonyms - frequency
Full translation (double/parallel translation)

Each translator translates all of the material to be translated. It stands in contrast to split translations. This refers to the first step in the TRAPD model, the ‘T’.

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Synonyms - Full translation
Functional equivalence

It measures to what degree the hypothetical construct serves “similar functions” within each society or cultural group. See Johnson (1998b) for more information.

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