Cited by 568Statistical Methods and Bayesian InferenceAdvanced Causal Inference TechniquesStatistical Methods in Epidemiology

Tuning multiple imputation by predictive mean matching and local residual draws

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Morris, Tim P, White, Ian R, Royston, Patrick·2014·BMC Medical Research Methodology

Abstract

BACKGROUND: Multiple imputation is a commonly used method for handling incomplete covariates as it can provide valid inference when data are missing at random. This depends on being able to correctly specify the parametric model used to impute missing values, which may be difficult in many realistic settings. Imputation by predictive mean matching (PMM) borrows an observed value from a donor with a similar predictive mean; imputation by local residual draws (LRD) instead borrows the donor's residual. Both methods relax some assumptions of parametric imputation, promising greater robustness when the imputation model is misspecified. METHODS: We review development of PMM and LRD and outline the various forms available, and aim to clarify some choices about how and when they should be used. We compare performance to fully parametric imputation in simulation studies, first when the imputation model is correctly specified and then when it is misspecified. RESULTS: In using PMM or LRD we strongly caution against using a single donor, the default value in some implementations, and instead advocate sampling from a pool of around 10 donors. We also clarify which matching metric is best. Among the current MI software there are several poor implementations. CONCLUSIONS: PMM and LRD may have a role for imputing covariates (i) which are not strongly associated with outcome, and (ii) when the imputation model is thought to be slightly but not grossly misspecified. Researchers should spend efforts on specifying the imputation model correctly, rather than expecting predictive mean matching or local residual draws to do the work.

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Authors
Morris, T. P., White, I. R., & Royston, P.
Affiliations
  • MRC Clinical Trials Unit at UCL (GB)
  • MRC Biostatistics Unit (GB)
Corresponding author
Morris, Tim P
Venue
BMC Medical Research Methodology
Published
2014-06-05
Volume
14
Issue
1
Pages
75-75
ISSN
1471-2288 (ISSN-L)
OpenAlex
W2058854776
Cited by
568
References
41
Citations by year
2026: 45 · 2025: 64 · 2024: 81 · 2023: 68 · 2022: 70 · 2021: 63 · 2020: 56 · 2019: 44 · 2018: 32 · 2017: 23 · 2016: 12 · 2015: 6 · 2014: 2 · 2012: 1
FWCI
15.13
Type
journal article
Language
en
Open access
Locations
  • BMC Medical Research Methodology (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Funders
Medical Research Council (MC_EX_G0800814, U1052 60558)
Topics
  • Physical Sciences › Mathematics › Statistics and Probability › Statistical Methods and Bayesian Inference
  • Physical Sciences › Mathematics › Statistics and Probability › Advanced Causal Inference Techniques
  • Physical Sciences › Mathematics › Statistics and Probability › Statistical Methods in Epidemiology
Keywords
multiple imputation, predictive mean matching, missing at random, donor selection
MeSH terms
Carcinoma, Ovarian Epithelial, Albumins, Computer Simulation, Data Interpretation, Statistical, Humans, Neoplasms, Glandular and Epithelial, Ovarian Neoplasms, Serum Albumin, Models, Statistical, Biomedical Research

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