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  2. Excited delirium - Wikipedia

    en.wikipedia.org/wiki/Excited_delirium

    Throughout the 19th and early-20th century, "excited delirium" was used to describe an emotional and agitated state related to drug overdose [ 18] and withdrawal [ 19] or poisonings, [ 20] similar to catatonia or Bell's mania, with some believing them to be the same condition. [ 21]

  3. Cognitive pretesting - Wikipedia

    en.wikipedia.org/wiki/Cognitive_pretesting

    Cognitive pretesting, or cognitive interviewing, is a field research method where data is collected on how the subject answers interview questions. It is the evaluation of a test or questionnaire before it's administered. [1] It allows survey researchers to collect feedback regarding survey responses and is used in evaluating whether the ...

  4. Questionnaire construction - Wikipedia

    en.wikipedia.org/wiki/Questionnaire_construction

    There are two different types of questions that survey researchers use when writing a questionnaire: free-response questions and closed questions. Free-response questions are open-ended, whereas closed questions are usually multiple-choice. Free-response questions are beneficial because they allow the responder greater flexibility, but they are ...

  5. Delirium - Wikipedia

    en.wikipedia.org/wiki/Delirium

    Delirium (formerly acute confusional state, an ambiguous term which is now discouraged) [ 1] is a specific state of acute confusion attributable to the direct physiological consequence of a medical condition, effects of a psychoactive substance, or multiple causes, which usually develops over the course of hours to days. [ 2][ 3] As a syndrome ...

  6. Conjoint analysis - Wikipedia

    en.wikipedia.org/wiki/Conjoint_analysis

    Conjoint analysis is a survey-based statistical technique used in market research that helps determine how people value different attributes (feature, function, benefits) that make up an individual product or service. The objective of conjoint analysis is to determine what combination of a limited number of attributes is most influential on ...

  7. Disability-adjusted life year - Wikipedia

    en.wikipedia.org/wiki/Disability-adjusted_life_year

    Disability-adjusted life years ( DALYs) are a measure of overall disease burden, expressed as the number of years lost due to ill-health, disability, or early death. It was developed in the 1990s as a way of comparing the overall health and life expectancy of different countries. DALYs have become more common in the field of public health and ...

  8. Product sample - Wikipedia

    en.wikipedia.org/wiki/Product_sample

    A free sample or "freebie" is a portion of food or other product (for example beauty products) given to consumers in shopping malls, supermarkets, retail stores, or through other channels (such as via the Internet). [1] Sometimes samples of non-perishable items are included in direct marketing mailings. The purpose of a free sample is to ...

  9. Survey methodology - Wikipedia

    en.wikipedia.org/wiki/Survey_methodology

    Survey methodology is "the study of survey methods". [1] As a field of applied statistics concentrating on human-research surveys, survey methodology studies the sampling of individual units from a population and associated techniques of survey data collection, such as questionnaire construction and methods for improving the number and accuracy of responses to surveys.