Study Design Basics
(T/F) Increasing sample size can reduce random error.
True
(MCQ) In PubMed, which Boolean operator links synonyms?(AND, OR, NOT)
OR
(MCQ) Which method records food at the time of eating? (Food Record, FFQ, 24-hour recall)
Food Record
Consistent over- or underestimation is caused by:
A) Random error
B) Systematic error
B) Systematic error
Section summarizing results without interpretation:
A) Introduction
B) Results
C) Discussion
B) Results
A study collecting and analyzing new data for the first time is called an _______ study.
Original research
Using multiple related keywords in a search helps make it more _______.
(Relevant/targeted)
The method most often used in NHANES dietary surveys is the Automated Multiple Pass Method for _______.
24-hour recall
Error from chance that affects precision:
A) Systematic
B) Random
B) Random
Section explaining why the study was done:
A) Introduction
B) Methods
C) Discussion
A) Introduction
(MCQ) Which section of a research article describes how data were collected? (Introduction, Methods, Results, Discussion)
Methods
(MCQ) Best place to find peer-reviewed nutrition studies is....(Google, PubMed, Instagram)
PubMed
Limitation of an FFQ:
A) Captures details on preparation
B) Misses minute prep details
C) Highly precise
B) Misses minute prep details
(T/F) Systematic errors can be reduced by increasing sample size.
False
Section interpreting results and explaining importance:
A) Methods
B) Discussion
C) Results
B) Discussion
(MCQ) Which type of article summarizes and evaluates previous studies? (Case study, Systematic review, Randomized trial)
Systematic review
(MCQ) Which Boolean operator narrows a search to include all terms? (OR, AND, NOT)
AND
(MCQ) Which method asks participants to recall all foods eaten the previous day? (24-hour recall, food diary, FFQ)
24-hour recall
Which type of error impacts accuracy more than precision?
A) Random
B) Systematic
B) Systematic
The _______ section lists how data was collected and analyzed.
Methods
The ________ hierarchy ranks study designs by the strength of their evidence.
evidence
In database searching, ________ words are alternative terms or synonyms for your main keyword.
Alternate/related
The _________ questionnaire asks about usual frequency of specific foods over a period.
Food frequency
________ error can occur when participants misreport what they ate due to memory or bias.
(Self-report)
Which section may include study limitations and suggestions for future research?
A) Introduction
B) Discussion
C) Results
B) Discussion