Optimal Caliper Width for Propensity Score Matching of Three Treatment Groups: A Monte Carlo Study

• Yongji Wang ,

  Contributed equally to this work with: Yongji Wang, Hongwei Cai

  Affiliations Medical Department, The 309th Hospital of Chinese People's Liberation Army, Beijing, China, Department of Health Statistics, The Fourth Military Medical University, Xi'an, Shaanxi, China

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• Hongwei Cai ,

  Contributed equally to this work with: Yongji Wang, Hongwei Cai

  * E-mail: hwcai@fmmu.edu.cn (HC); jielaixia@yahoo.com (JX)

  Affiliation Information Center, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China

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• Chanjuan Li,

  Affiliation Department of Health Statistics, The Fourth Military Medical University, Xi'an, Shaanxi, China

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• Zhiwei Jiang,

  Affiliation Department of Health Statistics, The Fourth Military Medical University, Xi'an, Shaanxi, China

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• Ling Wang,

  Affiliation Department of Health Statistics, The Fourth Military Medical University, Xi'an, Shaanxi, China

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• Jiugang Song,

  Affiliation Department of Gastroenterology, The 309th Hospital of Chinese People's Liberation Army, Beijing, China

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• Jielai Xia

  * E-mail: hwcai@fmmu.edu.cn (HC); jielaixia@yahoo.com (JX)

  Affiliation Department of Health Statistics, The Fourth Military Medical University, Xi'an, Shaanxi, China

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