title: Systematic review of nulliparous women's views of planned cesarean birth: the missing component in the debate about a term cephalic trial.
abstract: BACKGROUND
  The suggestion that planned cesarean birth is gaining acceptance among women has led some physicians to advocate the need for a trial of primary planned cesarean section versus planned vaginal birth in healthy women with singleton cephalic pregnancies at term. This paper reviews published studies of nulliparous women's views of mode of birth collected in the antenatal period, examining why women may express a preference for cesarean birth and exploring implications for the debate about the need for a trial.
  
  
  METHODS
  A systematic literature review was undertaken of Cochrane, CINAHL, EMBASE, MEDLINE, and PsycINFO using the MeSH heading "cesarean section" and four free text spellings of "cesarean," or "birth" or "delivery," near truncated synonyms of 17 words meaning expressed preference. Studies of nulliparous women with a medical indication for cesarean birth, studies where a woman's preference for mode of birth was reported in the postpartum period, surveys of midwives or obstetricians, and opinion and non-English language papers were all excluded.
  
  
  RESULTS
  Nine papers were included in the review, which reported rates of women expressing a preference for cesarean birth that ranged from 0 to 100 percent at recruitment. However, the papers raised specific methodological, conceptual, and cultural issues that may have influenced women's preferences for mode of birth in the populations studied. These issues included the timing and frequency of data collection, complexity of factors determining individual women's decision making, and influence of societal norms.
  
  
  CONCLUSIONS
  Little evidence is available that an increasing cultural acceptance of cesarean delivery will bring about support for a trial among pregnant nulliparous women. Further qualitative research investigating the influence of both obstetric and psychosocial factors on women's views of vaginal and cesarean birth is required.
authors.affiliation: Department of Midwifery Studies, University of Central Lancashire, Preston, Lancashire, UK.
authors.forename: Carol
authors.initials: C
authors.lastname: Kingdon
authors.forename: Lisa
authors.initials: L
authors.lastname: Baker
authors.forename: Tina
authors.initials: T
authors.lastname: Lavender
mesh_terms: D000328:Adult; D002585:Cesarean Section / Q000523:psychology* / Q000706:statistics & numerical data; D017558:Elective Surgical Procedures / Q000523:psychology* / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D010298:Parity; D010358:Patient Participation; D017060:Patient Satisfaction; D011247:Pregnancy