title: Knowledge about factors that influence fertility among Australians of reproductive age: a population-based survey.
abstract: OBJECTIVE
  To explore knowledge about the effects on fertility of age, obesity, smoking, and timing of intercourse among Australians of reproductive age.
  
  
  METHODS
  Telephone survey of a representative sample of Australians.
  
  
  METHODS
  Not applicable.
  
  
  METHODS
  Australians aged 18 to 45 years who wish to have a child or another child now or in the future.
  
  
  METHODS
  None.
  
  
  METHODS
  Knowledge about the effect on fertility of age, obesity, smoking, and timing of intercourse.
  
  
  RESULTS
  A total of 462 interviews were conducted. The majority of respondents underestimated, by about 10 years, the age at which male and female fertility starts to decline. Only one in four correctly identified that female fertility starts to decline before age 35, and one in three identified that male fertility starts to decline before age 45. Most (59%) were aware that female obesity and smoking affect fertility, but fewer recognized that male obesity (30%) and smoking (36%) also influence fertility. Almost 40% of respondents had inadequate knowledge of when in the menstrual cycle a woman is most likely to conceive.
  
  
  CONCLUSIONS
  Considerable knowledge gaps about modifiable factors that affect fertility were identified. These are targeted in a national education campaign to promote awareness of factors that influence fertility.
authors.affiliation: Victorian Assisted Reproductive Treatment Authority, Melbourne, Victoria, Australia. karin.hammarberg@monash.edu
authors.forename: Karin
authors.initials: K
authors.lastname: Hammarberg
authors.forename: Tracey
authors.initials: T
authors.lastname: Setter
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Norman
authors.forename: Carol A
authors.initials: CA
authors.lastname: Holden
authors.forename: Janet
authors.initials: J
authors.lastname: Michelmore
authors.forename: Louise
authors.initials: L
authors.lastname: Johnson
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000367:Age Factors; D001315:Australia / Q000453:epidemiology; D003075:Coitus; D005260:Female; D005298:Fertility; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D008297:Male; D008875:Middle Aged; D010353:Patient Education as Topic / Q000706:statistics & numerical data*; D011159:Population Surveillance; D018570:Risk Assessment; D012907:Smoking / Q000453:epidemiology*; D055815:Young Adult