title: [A case-control study on the risk factors for preterm delivery].
abstract: The risk factors for preterm delivery were analyzed with 1:2 matched case-control study by conditional logistic regression analysis. The result showed that the main risk factors for preterm delivery were neuroticism scores, premature rupture of the membranes, husband's smoking frequency during the third trimester of pregnancy, pregnancy induced hypertension, working strength and first-trimester vaginal bleeding. It is indicated that an examination before delivery and gaining weight during pregnancy are helpful to decrease the occurrence of preterm delivery.
authors.affiliation: Department of Health Statistics, Hunan Medical University, Changsha 410078.
authors.forename: P C
authors.initials: PC
authors.lastname: Hu
authors.forename: S R
authors.initials: SR
authors.lastname: Liu
authors.forename: Z N
authors.initials: ZN
authors.lastname: Huang
authors.forename: Z Q
authors.initials: ZQ
authors.lastname: Sun
mesh_terms: D000328:Adult; D016022:Case-Control Studies; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D016015:Logistic Models; D007752:Obstetric Labor, Premature / Q000453:epidemiology*; D011247:Pregnancy; D012307:Risk Factors