Efficient design of geographically-defined clusters with spatial autocorrelation
Open accessAbstract
Clusters form the basis of a number of research study designs including survey and experimental studies. Cluster-based designs can be less costly but also less efficient than individual-based designs due to correlation between individuals within the same cluster. Their design typically relies on ad hoc choices of correlation parameters, and is insensitive to variations in cluster design. This article examines how to efficiently design clusters where they are geographically defined by demarcating areas incorporating individuals and households or other units. Using geostatistical models for spatial autocorrelation, we generate approximations to within cluster average covariance in order to estimate the effective sample size given particular cluster design parameters. We show how the number of enumerated locations, cluster area, proportion sampled, and sampling method affect the efficiency of the design and consider the optimization problem of choosing the most efficient design subject to budgetary constraints. We also consider how the parameters from these approximations can be interpreted simply in terms of ‘real-world’ quantities and used in design analysis.
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Higgins, J., JEROME, J. G., Boima, F., Dally, E., Krangar, L., Boley, E. J., Toussaint, S., Dibba, Y., Kachimanga, C., Mhango, M., et al. (2023) · PLOS Global Public Health · doi:10.1371/journal.pgph.0002045 · Cited by 4 · see citing works
Self-citation
- Authors
- I. Watson, S.
- Affiliations
- University of Birmingham, Birmingham, UK
- Venue
- Journal of Applied Statistics
- Publisher
- Informa UK Limited
- Published
- 2021-06-17
- Volume
- 49
- Issue
- 13
- Pages
- 3300-3318
- ISSN
- 0266-4763 (ISSN-L)
- 1360-0532
- PMC
- PMC9543073
- OpenAlex
- W3093624613
- Cited by
- 16
- References
- 1
- Citations by year
- 2026: 3 · 2025: 6 · 2023: 4 · 2022: 3
- FWCI
- 1.31
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Journal of Applied Statistics (publishedVersion, cc-by-nc-nd)
- PubMed Central (publishedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- RePEc: Research Papers in Economics (submittedVersion)
- University of Birmingham Research Portal (University of Birmingham) (submittedVersion, cc-by-nc-nd)
- arXiv (Cornell University) (cc-by)
- Funders
- NIHR (16/136/87)
- Topics
- Physical Sciences › Mathematics › Statistics and Probability › Survey Sampling and Estimation Techniques
- Social Sciences › Decision Sciences › Management Science and Operations Research › Optimal Experimental Design Methods
- Social Sciences › Economics, Econometrics and Finance › Economics and Econometrics › Spatial and Panel Data Analysis
- Keywords
- cluster sampling, spatial autocorrelation, effective sample size, geostatistical models, sampling fraction
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