Also known as snowball chain or nominated sampling

This preview shows page 6 - 8 out of 32 pages.

Also known as "snowball, chain, or nominated sampling". Used to locate subjects that might be difficult or impossible to obtain in other ways. Takes advantage of social networks and the fact that friends tend to have characteristics in common. Can be used in both qualitative and quantitative studies.
Image of page 6

Subscribe to view the full document.

How do you know when the number of subjects in a qualitative study is adequate? When saturation of information (redundancy) and verification of information (further confirmation of hunches, relationships, or theoretical models) occurs. What is the research setting? The site or location used to conduct a study. What are three common settings for conducting nursing research? natural / field setting, partially controlled, and highly controlled settings. In which setting does descriptive and correlational studies, and all qualitative studies take place? a natural or field setting, which is a uncontrolled or real-life situation or environment. Note: the researcher does not manipulate / control / change this environment. MODULE 3 CHAPTER 10 What is measurement? Measurement is the process of assigning numbers or values to individuals' health status, objects, events, or situations using a set of rules. What are direct measures? Direct measures involve determining the value of concrete things, such as height, weight, temperature, (accuracy and precision are important). What are indirect measures? Indirect measures attempt to measure something that is an abstract idea, a characteristic, or a concept, such as pain, stress, caring, coping, depression, anxiety. Rarely, if ever, can a single strategy measure all aspects of an abstract concept. What are the four levels of measurement? nominal (data is a category only - gender, kidney stone) ordinal (data is in categories that can be ranked - pain, dyspnea with ADLs)
Image of page 7
interval (data is in categories with equal numerical distances between them and no absolute zero point - temperature) ratio (data is in categories, has equal numerical distances and has an absolute zero point - weight) What is measurement error? The difference between what you measured...and what the real or "true" measure of the variable is. The amount of error in any measure varies. There could be considerable error in one measurement and very little in the next. Measurement error exists in both direct measures (like blood pressure) and indirect measures (like pain). What are the two types of measurement error? random error and systematic error What is random measurement error? the difference between the measured value and the true value without pattern or direction (random). So the more times you measure the value (and average those values together)...hopefully the closer you are getting to the person's true value or score (unless your random error rate is high).
Image of page 8
You've reached the end of this preview.
  • Spring '16
  • Cauble
  • Qualitative Research, researcher

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern