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Multiple Overimputation to Address Missing Data and Measurement Error: Application to HIV Treatment During Pregnancy and Pregnancy Outcomes.

Publication ,  Journal Article
Bengtson, AM; Westreich, D; Musonda, P; Pettifor, A; Chibwesha, C; Chi, BH; Vwalika, B; Pence, BW; Stringer, JSA; Miller, WC
Published in: Epidemiology
September 2016

BACKGROUND: Investigations of the association of combination antiretroviral therapy (ART) with pregnancy outcomes often rely on routinely collected clinical data, which are prone to missing data and measurement error. Measurement error in gestational age may bias the relation between combination ART and gestational age-based outcomes. METHODS: We demonstrate the use of multiple overimputation to address missing data and measurement error in gestational age. Using routinely collected clinical data from public health facilities in Lusaka, Zambia, we multiply imputed missing data and multiply overimputed observed values of gestational age. Poisson models with robust variance estimators were used to estimate risk ratios (RRs) for the associations of duration of combination ART with small for gestational age (SGA) and preterm birth. We compared results from a complete-case analysis, using multiple imputation to address missing data only and using multiple overimputation to address missing data and measurement error. RESULTS: In the complete-case analysis, there was no evidence of an association between duration of combination ART and SGA or preterm birth. When we performed multiple overimputation, RRs for SGA moved past the null, but remained imprecise. For preterm birth, RRs for 9-32 weeks of combination ART moved away from the null as the variance due to measurement error increased. CONCLUSION: When we used multiple overimputation to account for measurement error and missing data, we observed an increased risk of preterm birth with longer duration of combination ART. Future analyses examining associations between combination ART and pregnancy outcomes should consider using multiple overimputation to address measurement error in gestational age.

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Published In

Epidemiology

DOI

EISSN

1531-5487

Publication Date

September 2016

Volume

27

Issue

5

Start / End Page

642 / 650

Location

United States

Related Subject Headings

  • Zambia
  • Young Adult
  • Statistics as Topic
  • Risk Factors
  • Premature Birth
  • Pregnancy Outcome
  • Pregnancy Complications, Infectious
  • Pregnancy
  • Infant, Small for Gestational Age
  • Infant, Newborn
 

Citation

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Bengtson, A. M., Westreich, D., Musonda, P., Pettifor, A., Chibwesha, C., Chi, B. H., … Miller, W. C. (2016). Multiple Overimputation to Address Missing Data and Measurement Error: Application to HIV Treatment During Pregnancy and Pregnancy Outcomes. Epidemiology, 27(5), 642–650. https://doi.org/10.1097/EDE.0000000000000494
Bengtson, Angela M., Daniel Westreich, Patrick Musonda, Audrey Pettifor, Carla Chibwesha, Benjamin H. Chi, Bellington Vwalika, Brian W. Pence, Jeffrey S. A. Stringer, and William C. Miller. “Multiple Overimputation to Address Missing Data and Measurement Error: Application to HIV Treatment During Pregnancy and Pregnancy Outcomes.Epidemiology 27, no. 5 (September 2016): 642–50. https://doi.org/10.1097/EDE.0000000000000494.
Bengtson AM, Westreich D, Musonda P, Pettifor A, Chibwesha C, Chi BH, et al. Multiple Overimputation to Address Missing Data and Measurement Error: Application to HIV Treatment During Pregnancy and Pregnancy Outcomes. Epidemiology. 2016 Sep;27(5):642–50.
Bengtson, Angela M., et al. “Multiple Overimputation to Address Missing Data and Measurement Error: Application to HIV Treatment During Pregnancy and Pregnancy Outcomes.Epidemiology, vol. 27, no. 5, Sept. 2016, pp. 642–50. Pubmed, doi:10.1097/EDE.0000000000000494.
Bengtson AM, Westreich D, Musonda P, Pettifor A, Chibwesha C, Chi BH, Vwalika B, Pence BW, Stringer JSA, Miller WC. Multiple Overimputation to Address Missing Data and Measurement Error: Application to HIV Treatment During Pregnancy and Pregnancy Outcomes. Epidemiology. 2016 Sep;27(5):642–650.

Published In

Epidemiology

DOI

EISSN

1531-5487

Publication Date

September 2016

Volume

27

Issue

5

Start / End Page

642 / 650

Location

United States

Related Subject Headings

  • Zambia
  • Young Adult
  • Statistics as Topic
  • Risk Factors
  • Premature Birth
  • Pregnancy Outcome
  • Pregnancy Complications, Infectious
  • Pregnancy
  • Infant, Small for Gestational Age
  • Infant, Newborn