When.com Web Search

Search results

  1. Results From The WOW.Com Content Network
  2. Food frequency questionnaire - Wikipedia

    en.wikipedia.org/wiki/Food_frequency_questionnaire

    The questionnaire design was described in a 1986 paper [30] and the first research paper validating the questionnaire was published in 1990. [31] The FFQ was subsequently modified and a web version was created. [32] Pen-and-paper and web version, both available at cost. Cost is $2 per respondent for pen-and-paper version, with a minimum of $100.

  3. National Health and Nutrition Examination Survey - Wikipedia

    en.wikipedia.org/wiki/National_Health_and...

    NHANES findings are used to determine the prevalence of major diseases and risk factors for diseases. Information is used to assess nutritional status and its association with health promotion and disease prevention. NHANES findings are also the basis for national standards for such measurements as height, weight, and blood pressure.

  4. National Center for Health Statistics - Wikipedia

    en.wikipedia.org/wiki/National_Center_for_Health...

    The National Health and Nutrition Examination Survey (NHANES) is NCHS's most in-depth and logistically complex survey, operating out of mobile examination centers that travel to randomly selected sites throughout the U.S. to assess the health and nutritional status of Americans.

  5. National Health Interview Survey - Wikipedia

    en.wikipedia.org/wiki/National_Health_Interview...

    The National Health Interview Survey (NHIS) is an annual, cross-sectional survey intended to provide nationally representative estimates on a wide range of health status and utilization measures among the nonmilitary, noninstitutionalized population of the United States.

  6. Questionnaire - Wikipedia

    en.wikipedia.org/wiki/Questionnaire

    A basic questionnaire in Thai. A questionnaire is a research instrument that consists of a set of questions (or other types of prompts) for the purpose of gathering information from respondents through survey or statistical study. A research questionnaire is typically a mix of close-ended questions and open-ended questions.

  7. List of PDF software - Wikipedia

    en.wikipedia.org/wiki/List_of_PDF_software

    As with Adobe Acrobat, Nitro PDF Pro's reader is free; but unlike Adobe's free reader, Nitro's free reader allows PDF creation (via a virtual printer driver, or by specifying a filename in the reader's interface, or by drag-'n-drop of a file to Nitro PDF Reader's Windows desktop icon); Ghostscript not needed. PagePlus: Proprietary: No

  8. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    It can also be used to export form data to stand-alone files that can be imported back into the corresponding PDF interactive form. As of August 2019, XFDF 3.0 is an ISO/IEC standard under the formal name ISO 19444-1:2019 - Document management — XML Forms Data Format — Part 1: Use of ISO 32000-2 (XFDF 3.0). [58]

  9. Frequency (statistics) - Wikipedia

    en.wikipedia.org/wiki/Frequency_(statistics)

    A frequency distribution shows a summarized grouping of data divided into mutually exclusive classes and the number of occurrences in a class. It is a way of showing unorganized data notably to show results of an election, income of people for a certain region, sales of a product within a certain period, student loan amounts of graduates, etc.