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effectivehealthcare.ahrq.gov/sites/default/files/assessing-quality.ppt
January 01, 2010 - to the Body of Evidence
Quality (systematic error and inferential error, type of study)
Size of study … to the Body of Evidence
The quality or internal validity of a study (i.e., limitations of study design … Study design — sources of bias may vary by design
Study conduct — poor study conduct and discrepancy … Other considerations include study conduct and discrepancies between study design and study conduct. … study design.
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effectivehealthcare.ahrq.gov/sites/default/files/assessing-the-risk-of-bias_draft-report.pdf
June 02, 2011 - can be thought of as assessing the risk that the study results
reflect bias in study design or execution … who remain in the study. … x x
Did the strategy for recruiting participants into the study differ across study
groups? … x x x x x
Did variation from the study protocol compromise the conclusions of the
study? … design
Study Design Quality Considerations
RCTs On study conduct:
Are definitions of reported
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effectivehealthcare.ahrq.gov/sites/default/files/methodsguidenorris_060420101.pdf
June 01, 2010 - A potential advantage of this type of study is that long-
term benefits, tolerability, and harms can … This
assessment will focus particularly on issues of the natural history of the condition under study … Different study designs may be
optimal for different types of review questions, and study designs must … Heart Protection Study Collaborative Group. … Although the
study did not compare one triptan with another, the study provided data that a particular
-
effectivehealthcare.ahrq.gov/sites/default/files/pdf/methods-guidance-observational-studies_methods.pdf
June 01, 2010 - A potential advantage of this type of study is that long-
term benefits, tolerability, and harms can … This
assessment will focus particularly on issues of the natural history of the condition under study … Different study designs may be
optimal for different types of review questions, and study designs must … Heart Protection Study Collaborative Group. … Although the
study did not compare one triptan with another, the study provided data that a particular
-
effectivehealthcare.ahrq.gov/sites/default/files/related_files/COVID-19-pharmaceutical-treatments-rapid-review.pdf
March 01, 2024 - There was no significant difference in risk of
all-cause mortality in any study. … Hydroxychloroquine and tocilizumab therapy in
COVID-19 patients-An observational study. … Documents reporting on the same study were consolidated into one study record. … A-3
The following data were abstracted:
• Study identifier (author) and publication year
• Study … For a study to be rated “overall” as low risk, the study must be rated as low risk on both
items.
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effectivehealthcare.ahrq.gov/sites/default/files/product/pdf/pbi-protocol.pdf
August 09, 2021 - study/
41 exp field study/
42 in vivo study/
43 exp panel study/
44 exp Pilot Projects/
45 exp … pilot study/
46 exp prevention study/
47 exp replication study/
48 exp theoretical study/
49 exp … "case referent study" or "case referent study" or "case compeer
study" or "case comparison study" or … study/
42 exp field study/
43 in vivo study/
44 exp panel study/
45 exp Pilot Projects/
46 exp … pilot study/
47 exp prevention study/
48 exp replication study/
49 exp theoretical study/
50 exp
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effectivehealthcare.ahrq.gov/sites/default/files/wysiwyg/pdf/methods-guide-inclusion-nonrandomized-studies.pdf
September 01, 2022 - intervention has been called a before-
after study, a pre-post study, a case series, or a cohort study … methods rather than study design
names to differentiate among NRSI types.4
When considering study … )
Case study (also known as case report)
Table 1 provides a summary of common NRSI study designs … (Also known as
pre-post study)†
A study in which
a single group
of participants
with outcomes … Study design search
filters.
-
effectivehealthcare.ahrq.gov/sites/default/files/product/pdf/methods-guide-inclusion-nonrandomized-studies.pdf
September 01, 2022 - intervention has been called a before-
after study, a pre-post study, a case series, or a cohort study … methods rather than study design
names to differentiate among NRSI types.4
When considering study … )
Case study (also known as case report)
Table 1 provides a summary of common NRSI study designs … (Also known as
pre-post study)†
A study in which
a single group
of participants
with outcomes … Study design search
filters.
-
effectivehealthcare.ahrq.gov/sites/default/files/related_files/appendix-table-B-1-observational-studies.xlsx
March 20, 2021 - Author Publication Year Title PMID Publication Status at Time of Report Publication Link/URL Country Study … Data obtained as part of the study Any employee of SpaceX None Ab+ Negative serology Range: 18–71 years … Healthcare workers Healthcare workers at Strasbourg University Hospital Data obtained as part of the study … facility residents Residents and staff at two nursing homes in London Data obtained as part of the study … a This study did not provide patient-level data, but used modeling to estimate protection.
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effectivehealthcare.ahrq.gov/sites/default/files/related_files/treatment-outcomes-diabetes-rapid-research.pdf
November 01, 2024 - , Key Points
9
Diabetes Type
Study; Country;
N; Intervention;
Study Design;
Followup time; … Summarized are the details for each study
regarding study location, funding source, DM stage, quality … Summarized are the details for each study regarding study location, funding
source, DM stage, quality … trial; PCS = prospective cohort study; RCS = retrospective cohort study; RCT
= randomized clinical … An
observational study.
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effectivehealthcare.ahrq.gov/sites/default/files/related_files/kidney-stones-draft-appendices.pdf
January 01, 2025 - All KQs: No comparator (single-
arm study). … Studies with fewer than 30
participants at baseline per study
arm. … Study Risk of Bias Crosswalk: Prior versus Current Report
First Author, Year Study Quality Rating in … without the study outcome. … in both
study
groups
Study 1
Calculated RR,
0.96, 95% CI, 0.02
to 47.20;
Calculated ARD per
-
effectivehealthcare.ahrq.gov/sites/default/files/related_files/effect-dietary-digestible-appendix-a.pdf
August 31, 2023 - * adj3 study) or (control* adj3 trial) or (randomized adj3 study) or
(randomized adj3 trial) or (randomised … adj3 study) or (randomised adj3 trial) or
"pragmatic clinical trial" or (random* adj1 allocat*) or … "quasi experimental analysis" or "quasiexperimental study" or "quasiexperimental
analysis" or "case … control study" or "case base study" or "case referrent study" or
"case referent study" or "case referent … study" or "case compeer study" or "case
comparison study" or "matched case control" or "before and
-
effectivehealthcare.ahrq.gov/sites/default/files/related_files/ced%20-appendix-2.xlsx
May 29, 2025 - Need to remind providers that the item under study remains covered by Medicare. … AHRQ revise the study design CED recommendation to provide patients more ethical and equitable coverage … Does the evidence generated in a study or series of studies allow CMS efficiently to end a CED with a … necessary to ensure that the CED study generates valid evidence. … Requirement D: that this also applies to study sponsors in addition to investigators.
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effectivehealthcare.ahrq.gov/sites/default/files/related_files/risk-cardiovascular-disease-appendix-a.pdf
August 31, 2023 - /
21 exp quasi experimental study/
22 exp case-control studies/
23
((control* adj3 study) or … (control* adj3 trial) or (randomized adj3 study) or (randomized
adj3 trial) or (randomised adj3 study … " or "prospective survey" or "prospective analysis" or prospectiv* or
"quasi experimental study" or … control study" or "case base study" or "case referrent
study" or "case referent study" or "case referent … study" or "case compeer study" or "case
comparison study" or "matched case control" or "before and
-
effectivehealthcare.ahrq.gov/sites/default/files/pdf/primary-research-design_research.pdf
January 01, 2012 - Study design in the SR: Are they relevant to proposed study? … Study design: Compare study designs, sources of bias of included studies, feasibility of study
designs … Comment:
A-2
Were the Results Similar From Study to Study?
What is Best? … PICO of
the proposed new study. … NA Unclear (8 studies included with 743 patients)
Were the results similar
from study to study?
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effectivehealthcare.ahrq.gov/sites/default/files/pdf/methods-guidance-bias-individual-studies_methods.pdf
March 01, 2012 - under study. … Study design Assessment should
evaluate the relevant
sources of risk of bias by
study design rather … who remain in the study. … for each included outcome of the
individual study, considering study conduct, and categorize as low … differ across study groups?
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effectivehealthcare.ahrq.gov/sites/default/files/related_files/cer-253-maternal-child-outcomes-wic-executive-summary.pdf
April 01, 2022 - pregnancy (1 study)
• Greater intakes of total fruit during pregnancy (1
study)
NA
Infant and
child … (1 study)
Child growth
anthropometric
status (KQ2)
NA • Child weight status (1 child study)
• Attained … weight, length, or head
circumference (1 maternal study, 1
child study)
Breastfeeding
outcomes
( … and cognitive
development (2 studies), social
development (1 study), motor
development (1 study),
communication … and adaptive
behavior (2 studies), developmental
risk (1 study), or academic
achievement (1 study)
-
effectivehealthcare.ahrq.gov/sites/default/files/related_files/living-systematic-reviews-full-text-articles-white-paper.pdf
January 01, 2024 - No study was excluded for evaluating
ineligible outcomes. … A double-blind,
randomized, placebo-controlled study on
160 patients. … Clinical
profiles of concurrent cannabis use in
chronic pain: a CHOIR study. … Clinical
profiles of concurrent cannabis use in
chronic pain: a CHOIR study. … A double-blind,
randomized, placebo-controlled study on
160 patients.
-
effectivehealthcare.ahrq.gov/sites/default/files/related_files/ced-topic-refinement.pdf
November 01, 2022 - The rationale for the study is
supported by scientific evidence
and study results are expected to
fill … The rationale for the study is
supported by scientific evidence
and study results are expected to
fill … We are
uncertain if a study can meet
both the needs of a CED study
and FDA’s post-approval needs … The study is not designed to
exclusively test toxicity, although
it is acceptable for a study to test … The study is not designed to exclusively test toxicity, although it is acceptable for a
study to test
-
effectivehealthcare.ahrq.gov/sites/default/files/related_files/ptsd-6-protocol.pdf
December 07, 2024 - If study authors respond and report
missing study data, corrections, or other study information relevant … Secondary Study Author & Year
2. Secondary Study Citation
3. Secondary Study Relationship
4. … Secondary Study PMID
5. Secondary Study PTSDpubs ID
Inclusion-Exclusion Criteria
1. … Study-reported inclusion and exclusion criteria
Study Characteristics
1. … Study Publication Year
2. Study Class
3. Countries
4. Site Type
5. Clinical Setting
6.