Other Study Designs Flashcards
?: least expensive systematic study of a cross section of individuals. Efficient for collecting data on large population
Surveys
?: qualitative research technique with discussion questions that are open-ended to collect info
Focus Groups
?: individual-level assessments used by wellness or health insurance companies
Health Risk Appraisal
Steps in Health Risk Appraisal
1) participant provides self-report health related info
2) Part. receives individual feedback
3) info used to provide on rec or intervention towards promoting health
Goal of probability sampling strategies is to _____
reduce sampling error.
Probability Strategies
- Random Sampling
- Cluster Sampling
Non-Probability strategies
- Convenience Sampling
- Snowball sampling
Each individual in the population has the same probability of being sampled
Random sampling
Unit of randomization; population of interest exists in units
Cluster sampling
Sample participants in a way that is convenient
Convenience sampling
Going through mutuals or suggestions
Snowball sampling
Food science designs
- Paired comparison test
- Triangle test
- Quantitative Descriptive Test (QDT)
?: also called pref test; a judge is presented with two samples (A&B) and asked to choose one higher in certain attribute
Paired comparison test (samples presented in two sequences (AB, BA)
?: 2 identical samples and one different sample presented to the judge, judge identifies which is different
Triangle Test
In ____, no specific question about sensory characterisitcs, just which one is different
Triangle Test
?: recruits 8-12 panelists that are trained on sensory characteristics
Quantitative Descriptive Test (QDA)
?: high-level process that collect and critically analyze multiple research studies/papers using explicit methods
Systematic Review
?: guidlines from a systematic review
Evidence-based nutrition practice guideline
?: designed to assist practitioner or pt’s decision about appropriate nutrition care for spec diseases or conditions
Evidence-based nutrition practice guideline
?: critical analysis of current facts, data, research and literature on specific issue…key feature is position statement that can be controversial or confusing and needs Clarification
Position paper
Evidence Grades
Quality of Study
Quantity of studies and subjects
Consistency of findings
Clinical impact
Generalizability of findings
Grade I
Good/Strong: results from strong studies, clinically important results
Grade II
Fair: strong study design, fair results, some uncertainty
Grade III
Limited/weak: limited number of studies, weak design
Grade IV
Expert opinion only/consensus: opinion bases, not enough data
Grade V
Insufficient evidence/ grade not assignable: no evidence, no supported conclusion
?: Info can be measured and written in numbers
Quant Data
?: data collected via measurement. Large sampling, may include random or survey sampling
Quant Data
?: data reported via stats; means, standards deviations, medians, ranges, percentages, odds ration, hazard ratio
Quant Data
?: info about qualities often expressed in themes or quotes
Qualt Data
?: collect data via observation and interviews. Data analyzed by themes and descriptions
Qualt Data
?: small sample due to burden of interviewing participants. data of words/text, photo, video
Qualt Data
?: difficult to apply reliability and validity standards due to subjectivity
Qualt Data
