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Beta-binomial regression and bimodal utilization.

Publication ,  Journal Article
Liu, C-F; Burgess, JF; Manning, WG; Maciejewski, ML
Published in: Health Serv Res
October 2013

OBJECTIVE: To illustrate how the analysis of bimodal U-shaped distributed utilization can be modeled with beta-binomial regression, which is rarely used in health services research. DATA SOURCES/STUDY SETTING: Veterans Affairs (VA) administrative data and Medicare claims in 2001-2004 for 11,123 Medicare-eligible VA primary care users in 2000. STUDY DESIGN: We compared means and distributions of VA reliance (the proportion of all VA/Medicare primary care visits occurring in VA) predicted from beta-binomial, binomial, and ordinary least-squares (OLS) models. PRINCIPAL FINDINGS: Beta-binomial model fits the bimodal distribution of VA reliance better than binomial and OLS models due to the nondependence on normality and the greater flexibility in shape parameters. CONCLUSIONS: Increased awareness of beta-binomial regression may help analysts apply appropriate methods to outcomes with bimodal or U-shaped distributions.

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Published In

Health Serv Res

DOI

EISSN

1475-6773

Publication Date

October 2013

Volume

48

Issue

5

Start / End Page

1769 / 1778

Location

United States

Related Subject Headings

  • United States Department of Veterans Affairs
  • United States
  • Regression Analysis
  • Middle Aged
  • Medicare
  • Male
  • Humans
  • Health Services Research
  • Health Policy & Services
  • Female
 

Citation

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Liu, C.-F., Burgess, J. F., Manning, W. G., & Maciejewski, M. L. (2013). Beta-binomial regression and bimodal utilization. Health Serv Res, 48(5), 1769–1778. https://doi.org/10.1111/1475-6773.12055
Liu, Chuan-Fen, James F. Burgess, Willard G. Manning, and Matthew L. Maciejewski. “Beta-binomial regression and bimodal utilization.Health Serv Res 48, no. 5 (October 2013): 1769–78. https://doi.org/10.1111/1475-6773.12055.
Liu C-F, Burgess JF, Manning WG, Maciejewski ML. Beta-binomial regression and bimodal utilization. Health Serv Res. 2013 Oct;48(5):1769–78.
Liu, Chuan-Fen, et al. “Beta-binomial regression and bimodal utilization.Health Serv Res, vol. 48, no. 5, Oct. 2013, pp. 1769–78. Pubmed, doi:10.1111/1475-6773.12055.
Liu C-F, Burgess JF, Manning WG, Maciejewski ML. Beta-binomial regression and bimodal utilization. Health Serv Res. 2013 Oct;48(5):1769–1778.
Journal cover image

Published In

Health Serv Res

DOI

EISSN

1475-6773

Publication Date

October 2013

Volume

48

Issue

5

Start / End Page

1769 / 1778

Location

United States

Related Subject Headings

  • United States Department of Veterans Affairs
  • United States
  • Regression Analysis
  • Middle Aged
  • Medicare
  • Male
  • Humans
  • Health Services Research
  • Health Policy & Services
  • Female