title: Prolonged time to pregnancy is associated with a greater risk of adverse outcomes.
abstract: Births with known time to pregnancy (TTP) during the period 1989-2007 (n=17,114) were analyzed to investigate associations between TTP and pregnancy outcome among couples that conceived spontaneously. The adjusted odds ratio (95% confidence interval) for poor neonatal health, including low Apgar score, low umbilical vein pH, and need for neonatal intensive care, was 1.51 (1.09-2.09) in women who had a TTP of 25-36 months and 1.60 (1.18-2.19) in women who had a TTP of >or=37 months compared with women with a TTP of 0-6 months.
authors.affiliation: Department of Obstetrics and Gynecology, Kuopio University Hospital, and Faculty of Medicine, Kuopio University, Kuopio, Finland. kaisa.e.raatikainen@kuh.fi
authors.forename: Kaisa
authors.initials: K
authors.lastname: Raatikainen
authors.forename: Maija
authors.initials: M
authors.lastname: Harju
authors.forename: Maritta
authors.initials: M
authors.lastname: Hippeläinen
authors.forename: Seppo
authors.initials: S
authors.lastname: Heinonen
mesh_terms: D001034:Apgar Score; D001724:Birth Weight / Q000502:physiology; D005260:Female; D005298:Fertility / Q000502:physiology; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000453:epidemiology; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology; D011256:Pregnancy Outcome / Q000453:epidemiology*; D012044:Regression Analysis; D027724:Reproductive Techniques, Assisted / Q000706:statistics & numerical data; D012306:Risk; D011795:Surveys and Questionnaires; D013997:Time Factors