Systematic review - Revision history

Lawrence: /* Bibliography */

2025-06-04T14:16:55Z

Bibliography

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	== Enhances Funding and Ethical Approval ==		== Enhances Funding and Ethical Approval ==

	Grant agencies and ethics review boards require a clear justification for conducting an RCT. A systematic review demonstrates due diligence and shows that the proposed trial is evidence-informed, which increases the likelihood of funding and approval.		Grant agencies and [[ethics]] review boards require a clear justification for conducting an RCT. A systematic review demonstrates due diligence and shows that the proposed trial is evidence-informed, which increases the likelihood of funding and approval.

	== Facilitates Comparability and Generalizability ==		== Facilitates Comparability and Generalizability ==
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	===Bibliography===		===Bibliography===
	Higgins JPT, Thomas J, Chandler J, Cumpston M, Li T, Page MJ, Welch VA (editors). [https://training.cochrane.org/handbook/Cochrane Handbook for Systematic Reviews of Interventions version] 6.5 (updated August 2024). Cochrane, 2024. Available from www.training.cochrane.org/handbook.		# Higgins JPT, Thomas J, Chandler J, Cumpston M, Li T, Page MJ, Welch VA (editors). [https://training.cochrane.org/handbook/Cochrane Handbook for Systematic Reviews of Interventions version] 6.5 (updated August 2024). Cochrane, 2024. Available from www.training.cochrane.org/handbook.
			# Gough D, Oliver S, Thomas J. An Introduction to Systematic Reviews. 2nd ed. Sage Publications; 2017.
			# Greenhalgh T. How to read a paper: the basics of evidence-based medicine and healthcare. 6th ed. Wiley-Blackwell; 2019. Chapter on systematic reviews.
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	''Adapted for educational use. Please cite relevant trial methodology sources when using this material in research or teaching.''		''Adapted for educational use. Please cite relevant trial methodology sources when using this material in research or teaching.''

Lawrence: /* Optimizes Sample Size Calculations */

2025-04-04T00:12:07Z

Optimizes Sample Size Calculations

← Older revision		Revision as of 00:12, 4 April 2025
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	Systematic reviews guide key design decisions by analyzing how past trials were conducted. This can help refine:		Systematic reviews guide key design decisions by analyzing how past trials were conducted. This can help refine:
	* '''Eligibility criteria''', by examining populations included in previous studies.		* '''[[Trial participants\|Eligibility criteria]]''', by examining populations included in previous studies.
	* '''Intervention protocols''', including dose, frequency, and mode of delivery.		* '''[[Trial interventions\|Intervention protocols]]''', including dose, frequency, and mode of delivery.
	* '''Outcome measures''', focusing on validated and clinically meaningful endpoints.		* '''[[Trial outcomes\|Outcome measures]]''', focusing on validated and clinically meaningful endpoints.
	* '''Comparator choices''', such as placebo or standard of care, based on what has been tested before.		* '''[[Trial controls\|Comparator choices]]''', such as placebo or standard of care, based on what has been tested before.

	== Optimizes Sample Size Calculations ==		== Optimizes [[Sample size\|Sample Size]] Calculations ==

	Systematic reviews often include meta-analyses that provide pooled estimates of treatment effects and variability. These estimates are invaluable for powering a new trial appropriately, ensuring the sample size is neither too small to detect an effect nor unnecessarily large.		Systematic reviews often include meta-analyses that provide pooled estimates of treatment effects and variability. These estimates are invaluable for powering a new trial appropriately, ensuring the sample size is neither too small to detect an effect nor unnecessarily large.

Lawrence at 00:08, 4 April 2025

2025-04-04T00:08:54Z

← Older revision		Revision as of 00:08, 4 April 2025
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	'''See also:''' [[Research question]]; [[Equipoise]]; [[Trial outcomes]]; [[Sample size]]; [https://www.cochranelibrary.com/ Cochrane Library]		'''See also:''' [[Research question]]; [[Equipoise]]; [[Trial outcomes]]; [[Sample size]]; [https://www.cochranelibrary.com/ Cochrane Library]
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			===Bibliography===
			Higgins JPT, Thomas J, Chandler J, Cumpston M, Li T, Page MJ, Welch VA (editors). [https://training.cochrane.org/handbook/Cochrane Handbook for Systematic Reviews of Interventions version] 6.5 (updated August 2024). Cochrane, 2024. Available from www.training.cochrane.org/handbook.
			----
	''Adapted for educational use. Please cite relevant trial methodology sources when using this material in research or teaching.''		''Adapted for educational use. Please cite relevant trial methodology sources when using this material in research or teaching.''

Lawrence at 00:05, 4 April 2025

2025-04-04T00:05:28Z

← Older revision		Revision as of 00:05, 4 April 2025
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	'''See also:'''		'''See also:''' [[Research question]]; [[Equipoise]]; [[Trial outcomes]]; [[Sample size]]; [https://www.cochranelibrary.com/ Cochrane Library]
	* [[Research question]]		----
	* [[Equipoise]]
	* [[Trial outcomes]]		''Adapted for educational use. Please cite relevant trial methodology sources when using this material in research or teaching.''
	* [[Sample size]]
	* [https://www.cochranelibrary.com/ Cochrane Library]

Lawrence at 15:11, 30 March 2025

2025-03-30T15:11:52Z

Lawrence: Created page with "= Systematic review = Conducting a '''systematic review''' before launching a randomized controlled trial (RCT) is a critical step to ensure that the new study is scientifically necessary, methodologically sound, and ethically appropriate. Systematic reviews synthesize all available high-quality evidence on a particular topic, helping researchers identify what is already known and what gaps remain. == 1. Identifies Knowledge Gaps == A systematic review enables researc..."

2025-03-27T16:06:54Z

Created page with "= Systematic review = Conducting a '''systematic review''' before launching a randomized controlled trial (RCT) is a critical step to ensure that the new study is scientifically necessary, methodologically sound, and ethically appropriate. Systematic reviews synthesize all available high-quality evidence on a particular topic, helping researchers identify what is already known and what gaps remain. == 1. Identifies Knowledge Gaps == A systematic review enables researc..."

New page

= Systematic review =

Conducting a '''systematic review''' before launching a randomized controlled trial (RCT) is a critical step to ensure that the new study is scientifically necessary, methodologically sound, and ethically appropriate. Systematic reviews synthesize all available high-quality evidence on a particular topic, helping researchers identify what is already known and what gaps remain.

== 1. Identifies Knowledge Gaps ==

A systematic review enables researchers to assess the current state of evidence. It helps determine whether a proposed research question has already been sufficiently answered or if uncertainty remains. This prevents redundant studies and ensures that future trials address meaningful gaps in knowledge.

== 2. Strengthens Study Justification ==

RCTs are resource-intensive and require significant time, funding, and ethical approval. A systematic review provides a strong rationale for conducting a new trial by demonstrating that existing evidence is inconclusive or inconsistent. It helps justify why a new intervention or comparison is necessary.

== 3. Informs Study Design and Methodology ==

Systematic reviews guide key design decisions by analyzing how past trials were conducted. This can help refine:
* '''Eligibility criteria''', by examining populations included in previous studies.
* '''Intervention protocols''', including dose, frequency, and mode of delivery.
* '''Outcome measures''', focusing on validated and clinically meaningful endpoints.
* '''Comparator choices''', such as placebo or standard of care, based on what has been tested before.

== 4. Optimizes Sample Size Calculations ==

Systematic reviews often include meta-analyses that provide pooled estimates of treatment effects and variability. These estimates are invaluable for powering a new trial appropriately, ensuring the sample size is neither too small to detect an effect nor unnecessarily large.

== 5. Prevents Unethical Research ==

If a systematic review shows strong evidence that an intervention is effective or harmful, conducting a new RCT may violate ethical principles due to lack of clinical equipoise. Reviewing existing evidence protects participants from unnecessary risks or denial of beneficial therapies.

== 6. Enhances Funding and Ethical Approval ==

Grant agencies and ethics review boards require a clear justification for conducting an RCT. A systematic review demonstrates due diligence and shows that the proposed trial is evidence-informed, which increases the likelihood of funding and approval.

== 7. Facilitates Comparability and Generalizability ==

Systematic reviews help standardize definitions, measurements, and reporting conventions. By aligning with prior research, new trials are more likely to produce results that are comparable, reproducible, and useful for meta-analyses or clinical guidelines.

== Conclusion ==

A systematic review lays the groundwork for a rigorous and ethical RCT. It ensures that the trial addresses a genuine gap in knowledge, is based on best practices from previous research, and respects participant safety and resource allocation. Investigators are strongly encouraged to complete a systematic review—or verify that one has been done—prior to designing a new trial.

----

'''See also:'''
* [[Research question]]
* [[Equipoise]]
* [[Trial outcomes]]
* [[Sample size]]
* [https://www.cochranelibrary.com/ Cochrane Library]

← Older revision		Revision as of 15:11, 30 March 2025
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	Conducting a '''systematic review''' before launching a randomized controlled trial (RCT) is a critical step to ensure that the new study is scientifically necessary, methodologically sound, and ethically appropriate. Systematic reviews synthesize all available high-quality evidence on a particular topic, helping researchers identify what is already known and what gaps remain.		Conducting a '''systematic review''' before launching a randomized controlled trial (RCT) is a critical step to ensure that the new study is scientifically necessary, methodologically sound, and ethically appropriate. Systematic reviews synthesize all available high-quality evidence on a particular topic, helping researchers identify what is already known and what gaps remain.

	== 1. Identifies Knowledge Gaps ==		== Identifies Knowledge Gaps ==

	A systematic review enables researchers to assess the current state of evidence. It helps determine whether a proposed research question has already been sufficiently answered or if uncertainty remains. This prevents redundant studies and ensures that future trials address meaningful gaps in knowledge.		A systematic review enables researchers to assess the current state of evidence. It helps determine whether a proposed research question has already been sufficiently answered or if uncertainty remains. This prevents redundant studies and ensures that future trials address meaningful gaps in knowledge.

	== 2. Strengthens Study Justification ==		== Strengthens Study Justification ==

	RCTs are resource-intensive and require significant time, funding, and ethical approval. A systematic review provides a strong rationale for conducting a new trial by demonstrating that existing evidence is inconclusive or inconsistent. It helps justify why a new intervention or comparison is necessary.		RCTs are resource-intensive and require significant time, funding, and ethical approval. A systematic review provides a strong rationale for conducting a new trial by demonstrating that existing evidence is inconclusive or inconsistent. It helps justify why a new intervention or comparison is necessary.

	== 3. Informs Study Design and Methodology ==		== Informs Study Design and Methodology ==

	Systematic reviews guide key design decisions by analyzing how past trials were conducted. This can help refine:		Systematic reviews guide key design decisions by analyzing how past trials were conducted. This can help refine:
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	* '''Comparator choices''', such as placebo or standard of care, based on what has been tested before.		* '''Comparator choices''', such as placebo or standard of care, based on what has been tested before.

	== 4. Optimizes Sample Size Calculations ==		== Optimizes Sample Size Calculations ==

	Systematic reviews often include meta-analyses that provide pooled estimates of treatment effects and variability. These estimates are invaluable for powering a new trial appropriately, ensuring the sample size is neither too small to detect an effect nor unnecessarily large.		Systematic reviews often include meta-analyses that provide pooled estimates of treatment effects and variability. These estimates are invaluable for powering a new trial appropriately, ensuring the sample size is neither too small to detect an effect nor unnecessarily large.

	== 5. Prevents Unethical Research ==		== Prevents Unethical Research ==

	If a systematic review shows strong evidence that an intervention is effective or harmful, conducting a new RCT may violate ethical principles due to lack of clinical equipoise. Reviewing existing evidence protects participants from unnecessary risks or denial of beneficial therapies.		If a systematic review shows strong evidence that an intervention is effective or harmful, conducting a new RCT may violate ethical principles due to lack of clinical equipoise. Reviewing existing evidence protects participants from unnecessary risks or denial of beneficial therapies.

	== 6. Enhances Funding and Ethical Approval ==		== Enhances Funding and Ethical Approval ==

	Grant agencies and ethics review boards require a clear justification for conducting an RCT. A systematic review demonstrates due diligence and shows that the proposed trial is evidence-informed, which increases the likelihood of funding and approval.		Grant agencies and ethics review boards require a clear justification for conducting an RCT. A systematic review demonstrates due diligence and shows that the proposed trial is evidence-informed, which increases the likelihood of funding and approval.

	== 7. Facilitates Comparability and Generalizability ==		== Facilitates Comparability and Generalizability ==

	Systematic reviews help standardize definitions, measurements, and reporting conventions. By aligning with prior research, new trials are more likely to produce results that are comparable, reproducible, and useful for meta-analyses or clinical guidelines.		Systematic reviews help standardize definitions, measurements, and reporting conventions. By aligning with prior research, new trials are more likely to produce results that are comparable, reproducible, and useful for meta-analyses or clinical guidelines.