title: [Application of principal component analysis to construct socio-economic status index in a case-control study].
authors.affiliation: Guangxi Center for Disease Control and Prevention, Nanning 530028, China. yyyjin@126.com
authors.forename: Jin
authors.initials: J
authors.lastname: Yang
mesh_terms: D016022:Case-Control Studies; D006801:Humans; D010284:Paratyphoid Fever / Q000517:prevention & control; D025341:Principal Component Analysis; D012959:Socioeconomic Factors