title: [Propensity score (III) key issues in practice of propensity score].
authors.affiliation: Department of Health Statistics, Faculty of Preventative Medicine, Fourth Military Medical University, Xi' an, China.
authors.forename: Yong-ji
authors.initials: YJ
authors.lastname: Wang
authors.forename: Hong-wei
authors.initials: HW
authors.lastname: Cai
authors.forename: Jie-lai
authors.initials: JL
authors.lastname: Xia
authors.forename: Zhi-wei
authors.initials: ZW
authors.lastname: Jiang
authors.forename: Ling
authors.initials: L
authors.lastname: Wang
mesh_terms: D015233:Models, Statistical; D057216:Propensity Score