• 1
    Hewson D, Bennett A. Childbirth research data: medical records or women’s reports. Am J Epidemiol 1987;125:48491.
  • 2
    Casey R, Rieckhoff M, Beebe SA, Pinto-Martin J. Obstetric and perinatal events: the accuracy of maternal report. Clin Pediatr 1992;31:2004.
  • 3
    Meng YY, Jatulis DE, Elashoff RM, Liu E, Leung KM, Legorreta AP. Validity of clinical information from a maternity survey. Am J Med Qual 1997;12:1604.
  • 4
    Olson JE, Shu XO, Ross JA, Pendergrass T, Robison LL. Medical record validation of maternally reported birth characteristics and pregnancy-related events: a report from the Children’s Cancer Group. Am J Epidemiol 1997;145:5867.
  • 5
    Elkadry E, Kenton K, White P, Creech S, Brubaker L. Do mothers remember key events during labor? Am J Obstet Gynecol 2003;189:195200.
  • 6
    Plewis I. Millennium Cohort Study First Survey: Technical Report on Sampling, 3rd edn. Centre for Longitudinal Studies, London, 2004.
  • 7
    Tate AR, Calderwood L, Dezateux C, Joshi H, et al. Mother’s consent to linkage of survey data with her child’s birth records in a multi-ethnic national cohort study. Int J Epidemiol 2006;35:2948.
  • 8
    NHS Maternity Statistics, England: 1998–1999 to 2001–2002. Department of Health: London, 2002.
  • 9
    Rowe RE, Garcia J. Social class, ethnicity and attendance for antenatal care in the United Kingdom: a systematic review. J Public Health Med 2003;25:1139.
  • 10
    NICE Clinical Guideline 37. Routine postnatal care of women and their babies. []. Issue date: July 2006.