Multiple imputation to deal with missing objectively-measured physical activity data: findings from two cohorts

Authors

  • Rafaela Costa Martins Federal University of Pelotas, Post-graduate Program in Epidemiology, Pelotas, Rio Grande do Sul, Brazil. https://orcid.org/0000-0003-3538-7228
  • Bruna Gonçalves C. da Silva Federal University of Pelotas, Post-graduate Program in Epidemiology, Pelotas, Rio Grande do Sul, Brazil. https://orcid.org/0000-0003-2917-7320
  • Cauane Blumenberg Federal University of Pelotas, Post-graduate Program in Epidemiology, Pelotas, Rio Grande do Sul, Brazil. https://orcid.org/0000-0002-4580-3849
  • Luiza Isnardi Ricardo Federal University of Pelotas, Post-graduate Program in Epidemiology, Pelotas, Rio Grande do Sul, Brazil. https://orcid.org/0000-0002-1244-4501
  • Shana Ginar da Silva Federal University of Pelotas, Post-graduate Program in Epidemiology, Pelotas, Rio Grande do Sul, Brazil. Federal University of South Frontier, Faculty of Medicine, Passo Fundo, Rio Grande do Sul, Brazil. https://orcid.org/0000-0003-1504-6936
  • João Pedro Ribeiro Federal University of Pelotas, Faculty of Physical Education, Pelotas, Rio Grande do Sul, Brazil.
  • Alicia Matijasevich Federal University of Pelotas, Post-graduate Program in Epidemiology, Pelotas, Rio Grande do Sul, Brazil. São Paulo University, Faculty of Medicine, Department of Preventive Medicine, São Paulo, São Paulo, Brazil. https://orcid.org/0000-0003-0060-1589
  • Ana Maria Baptista Menezes Federal University of Pelotas, Post-graduate Program in Epidemiology, Pelotas, Rio Grande do Sul, Brazil.
  • Helen Gonçalves Federal University of Pelotas, Post-graduate Program in Epidemiology, Pelotas, Rio Grande do Sul, Brazil.
  • Fernando César Wehrmeister Federal University of Pelotas, Post-graduate Program in Epidemiology, Pelotas, Rio Grande do Sul, Brazil. https://orcid.org/0000-0001-7137-1747
  • Iná dos Santos Federal University of Pelotas, Post-graduate Program in Epidemiology, Pelotas, Rio Grande do Sul, Brazil. https://orcid.org/0000-0003-1258-9249
  • Inácio Crochemore-Silva Federal University of Pelotas, Post-graduate Program in Epidemiology, Pelotas, Rio Grande do Sul, Brazil. Federal University of Pelotas, Post-graduate Program in Physical Education, Pelotas, Rio Grande do Sul, Brazil. https://orcid.org/0000-0001-5390-8360
  • Aluísio JD Barros Federal University of Pelotas, Post-graduate Program in Epidemiology, Pelotas, Rio Grande do Sul, Brazil.

DOI:

https://doi.org/10.12820/rbafs.26e0209

Keywords:

Accelerometry, Physical activity, Statistics

Abstract

The objective of this article was to describe patterns of losses of information regarding accelerometer data and to assess the use of multiple imputation to generate physical activity estimates for individuals without accelerometry data. Two birth cohort studies from Pelotas (Brazil) with participants aged 22 and 11-years old assessed objectively measured physical activity differences between complete and imputed cases. Mean values of overall physical activity for complete cases (n1993 = 2,985 and n2004 = 3,348) and for complete cases plus imputed cases (n1993 = 760 and n2004 = 79) were described according to predictors. Male individuals, participants with black skin color, and less schooled individuals presented higher averages of overall physical activity than their counterparts. Almost all imputed estimates were comparable to the complete cases, and the highest difference found was 0.7 mg for the first quintile of socioeconomic status of the 1993 birth cohort. Multiple imputation is a positive technique to deal with missing data from objectively measured physical activity. It provides a set of relevant variables to be used in order to efficiently predict accelerometer data.

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References

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Published

2021-07-12

How to Cite

1.
Martins RC, Silva BGC da, Blumenberg C, Ricardo LI, Silva SG da, Ribeiro JP, et al. Multiple imputation to deal with missing objectively-measured physical activity data: findings from two cohorts. Rev. Bras. Ativ. Fís. Saúde [Internet]. 2021 Jul. 12 [cited 2024 Jul. 3];26:1-8. Available from: https://rbafs.org.br/RBAFS/article/view/14570

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Original Articles