Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Cluster Sampling Method01:20

Cluster Sampling Method

15.4K
Appropriate sampling methods ensure that samples are drawn without bias and accurately represent the population. Because measuring the entire population in a study is not practical, researchers use samples to represent the population of interest.
To choose a cluster sample, divide the population into clusters (groups) and then randomly select some of the clusters. All the members from these clusters are in the cluster sample. For example, if you randomly sample four departments from your...
15.4K
Sampling Plans01:23

Sampling Plans

1.3K
Sampling is a crucial step in analytical chemistry, allowing researchers to collect representative data from a large population. Common sampling methods include random, judgmental, systematic, stratified, and cluster sampling.
Random sampling is a method where each member of the population has an equal chance of being selected for the sample. It involves selecting individuals randomly, often using random number generators or lottery-type methods. For example, when analyzing the properties of a...
1.3K
Community Based Intervention01:30

Community Based Intervention

574
Community-based interventions in mental health represent a paradigm shift from institution-centered care to treatments embedded within the fabric of local communities. By prioritizing inclusion and leveraging existing societal structures, this approach fosters a supportive environment conducive to addressing mental health challenges while promoting individual dignity and agency.
Foundations of Community Mental Health Programs
Central to the success of community-based interventions is the...
574
Comparing the Survival Analysis of Two or More Groups01:20

Comparing the Survival Analysis of Two or More Groups

697
Survival analysis is a cornerstone of medical research, used to evaluate the time until an event of interest occurs, such as death, disease recurrence, or recovery. Unlike standard statistical methods, survival analysis is particularly adept at handling censored data—instances where the event has not occurred for some participants by the end of the study or remains unobserved. To address these unique challenges, specialized techniques like the Kaplan-Meier estimator, log-rank test, and...
697
Robbers Cave04:49

Robbers Cave

15.0K
During the 1950s, the landmark Robbers Cave experiment demonstrated that when groups must compete with one another, intergroup conflict, hostility, and even violence may result. At the Oklahoman summer camp, two troops of boys—termed the Rattlers and the Eagles—took part in a week-long tournament. During this time, their negativity culminated in derogatory name-calling, fistfights, and even vandalism and destruction of property. However, this work also revealed that such tension...
15.0K
Stratified Sampling Method01:16

Stratified Sampling Method

16.0K
Sampling is a technique to select a portion (or subset) of the larger population and study that portion (the sample) to gain information about the population. The sampling method ensures that samples are drawn without bias and accurately represent the population. Because measuring the entire population in a study is not practical, researchers use samples to represent the population of interest.
To choose a stratified sample, divide the population into groups called strata and then take a...
16.0K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Suspension or prioritisation? Exploring the ethics of age-based rationing in adult ADHD services.

Journal of medical ethics·2026
Same author

Age equality in UK healthcare policy and decision-making: a scoping review.

BMC medical ethics·2026
Same author

The antidiabetic potential of Leuconostoc mesenteroides strain SB1075 fermented soy yoghurt: Insights from mouse intestinal transcriptomics and metabolite analyses.

Food research international (Ottawa, Ont.)·2026
Same author

"Everywhere you see, C-sections are happening": examining trends and reasons for a rise in cesarean-section deliveries among women in urban informal settlements, Mumbai Metropolitan Region, using a mixed methods approach.

BMC pregnancy and childbirth·2026
Same author

Integrative bacterial-metabolite compositional profiling of traditional fermented fish paste (Napham) reveals a core bacterial consortium for differential synthesis of fermentation-derived functional metabolites.

Antonie van Leeuwenhoek·2026
Same author

Bacterial Extracellular Vesicles (BEVs) Derived From <i>Lactococcus lactis</i> as Multimodal Drug Delivery Platforms.

International journal of biomaterials·2026
Same journal

Treatment of genitourinary syndrome of menopause with fractional COâ‚‚ laser versus fractional microablative radiofrequency: study protocol for a double-blind, randomised, non-inferiority trial.

Trials·2026
Same journal

TaILOR: a randomised trial to compare the clinical and cost-effectiveness of a patient-initiated follow-up (PIFU) strategy compared to standard care pathways in people with inflammatory arthritis: a study protocol.

Trials·2026
Same journal

Scaling up community-based non-communicable disease research into practice in Pokhara Metropolitan City of Nepal (SCALE-NCD) trial: study protocol for a cluster-randomized controlled trial.

Trials·2026
Same journal

EECP intervention and coronary flow reserve in chronic coronary syndrome: a protocol of a multicentre, randomised controlled study in China (ECP-Core Trial).

Trials·2026
Same journal

Impact of early tracheostomy in infratentorial lesions trial: rationale and design.

Trials·2026
Same journal

Efficacy of transcranial direct current stimulation for post-stroke urinary incontinence: study protocol for a randomized controlled trial.

Trials·2026
See all related articles

Related Experiment Video

Updated: Mar 23, 2026

Large-scale Reconstructions and Independent, Unbiased Clustering Based on Morphological Metrics to Classify Neurons in Selective Populations
12:27

Large-scale Reconstructions and Independent, Unbiased Clustering Based on Morphological Metrics to Classify Neurons in Selective Populations

Published on: February 15, 2017

7.4K

Reconstructing communities in cluster trials?

Sapfo Lignou1, Sushmita Das2, Jigna Mistry2

  • 1University College London, London, UK.

Trials
|March 30, 2016
PubMed
Summary
This summary is machine-generated.

Community engagement in cluster trials is vital. Understanding residents' sense of community can improve trial design and prevent social disharmony, ensuring research meets local needs.

Keywords:
CRTsClustersCommunityCommunity engagementIndiaMumbai

More Related Videos

The Collective Trust Game: An Online Group Adaptation of the Trust Game Based on the HoneyComb Paradigm
06:18

The Collective Trust Game: An Online Group Adaptation of the Trust Game Based on the HoneyComb Paradigm

Published on: October 20, 2022

2.7K
Integrating Computerized Linguistic and Social Network Analyses to Capture Addiction Recovery Capital in an Online Community
08:53

Integrating Computerized Linguistic and Social Network Analyses to Capture Addiction Recovery Capital in an Online Community

Published on: May 31, 2019

5.9K

Related Experiment Videos

Last Updated: Mar 23, 2026

Large-scale Reconstructions and Independent, Unbiased Clustering Based on Morphological Metrics to Classify Neurons in Selective Populations
12:27

Large-scale Reconstructions and Independent, Unbiased Clustering Based on Morphological Metrics to Classify Neurons in Selective Populations

Published on: February 15, 2017

7.4K
The Collective Trust Game: An Online Group Adaptation of the Trust Game Based on the HoneyComb Paradigm
06:18

The Collective Trust Game: An Online Group Adaptation of the Trust Game Based on the HoneyComb Paradigm

Published on: October 20, 2022

2.7K
Integrating Computerized Linguistic and Social Network Analyses to Capture Addiction Recovery Capital in an Online Community
08:53

Integrating Computerized Linguistic and Social Network Analyses to Capture Addiction Recovery Capital in an Online Community

Published on: May 31, 2019

5.9K

Area of Science:

  • Public Health Research
  • Biomedical Ethics
  • Community-Based Participatory Research

Background:

  • Growing ethical considerations in cluster trials.
  • Lack of literature on defining communities in biomedical research clusters.
  • Exploration of community definitions in collaborative research.

Purpose of the Study:

  • To investigate community perceptions in a cluster-randomised trial (CRT).
  • To assess potential mismatches between scientific clusters and community definitions.
  • To understand implications for trial design and social harmony.

Main Methods:

  • Focus group discussions with local residents.
  • Semi-structured interviews with residents, leaders, and officials.
  • Community-based cluster randomised trial (CRT) in Mumbai, India.

Main Results:

  • Residents' sense of community aligned with the geographic definition of clusters.
  • Perceived community needs were not fully addressed by the trial interventions.
  • Identified a potential conceptual mismatch between 'clusters' and 'communities'.

Conclusions:

  • Social factors are crucial alongside statistical efficiency in cluster trial design.
  • Community engagement can inform cluster selection and trial design.
  • Aligning clusters with community definitions may mitigate methodological issues and social disharmony.