• 1
    Akolekar R, Bower S, Flack N, Bilardo CM, Nicolaides KH. Prediction of miscarriage and stillbirth at 11–13 weeks and the contribution of chorionic villus sampling. Prenat Diagn 2011; 31: 3845.
  • 2
    Papaioannou GI, Syngelaki A, Maiz N, Ross JA, Nicolaides KH. Ultrasonographic prediction of early miscarriage. Human Reprod 2011; 26: 16851692.
  • 3
    Reddy UM, Laughon SK, Sun L, Troendle J, Willinger M, Zhang J. Prepregnancy risk factors for antepartum stillbirth in the United States. Obstet Gynecol 2010; 116: 11191126.
  • 4
    Ananth CV, Liu S, Kinzler WL, Kramer MS. Stillbirths in the United States, 1981–2000: an age, period, and cohort analysis. Am J Public Health 2005; 95: 22132217.
  • 5
    Salihu HM, Kinniburgh BA, Aliyu MH, Kirby RS, Alexander GR. Racial disparity in stillbirth among singleton, twin, and triplet gestations in the United States. Obstet Gynecol 2004; 104: 734740.
  • 6
    Sibai BM, Ewell M, Levine RJ, Klebanoff MA, Esterlitz J, Catalano PM, Goldenberg RL, Joffe G. Risk factors associated with preeclampsia in healthy nulliparous women. The Calcium for Preeclampsia Prevention (CPEP) Study Group. Am J Obstet Gynecol 1997; 177: 10031010.
  • 7
    Knuist M, Bonsel GJ, Zondervan HA, Treffers PE. Risk factors for preeclampsia in nulliparous women in distinct ethnic groups: a prospective cohort study. Obstet Gynecol 1998; 92: 174178.
  • 8
    Caughey AB, Stotland NE, Washington AE, Escobar GJ. Maternal ethnicity, paternal ethnicity, and parental ethnic discordance: predictors of preeclampsia. Obstet Gynecol 2005; 106: 156161.
  • 9
    Tanaka M, Jaamaa G, Kaiser M, Hills E, Soim A, Zhu M, Shcherbatykh IY, Samelson R, Bell E, Zdeb M, McNutt LA. Racial disparity in hypertensive disorders of pregnancy in New York State: a 10-year longitudinal population-based study. Am J Public Health 2007; 97: 163170.
  • 10
    Shen JJ, Tymkow C, MacMullen N. Disparities in maternal outcomes among four ethnic populations. Ethn Dis 2005; 15: 492497.
  • 11
    Bryant AS, Seely EW, Cohen A, Lieberman E. Patterns of pregnancy-related hypertension in black and white women. Hypertens Pregnancy 2005; 24: 281290.
  • 12
    Poon LC, Kametas NA, Chelemen T, Leal A, Nicolaides KH. Maternal risk factors for hypertensive disorders in pregnancy: a multivariate approach. J Hum Hypertens 2010; 24: 104110.
  • 13
    Gong J, Savitz DA, Stein CR, Engel SM. Maternal ethnicity and pre-eclampsia in New York City, 1995–2003. Paediatr Perinat Epidemiol 2012; 26: 4552.
  • 14
    Savitz DA, Janevic TM, Engel SM, Kaufman JS, Herring AH. Ethnicity and gestational diabetes in New York City, 1995–2003. BJOG 2008; 115: 969978.
  • 15
    Getahun D, Nath C, Ananth CV, Chavez MR, Smulian JC. Gestational diabetes in the United States: temporal trends 1989 through 2004. Am J Obstet Gynecol 2008; 198: 525.e15.
  • 16
    Baraban E, McCoy L, Simon P. Increasing prevalence of gestational diabetes and pregnancy-related hypertension in Los Angeles County, California, 1991–2003. Prev Chronic Dis 2008; 5: A77.
  • 17
    Dabelea D, Snell-Bergeon JK, Hartsfield CL, Bischoff KJ, Hamman RF, McDuffie RS; Kaiser Permanente of Colorado GDM Screening Program. Increasing prevalence of gestational diabetes mellitus (GDM) over time and by birth cohort: Kaiser Permanente of Colorado GDM screening program. Diabetes Care 2005; 28: 579584.
  • 18
    Thorpe LE, Berger D, Ellis JA, Bettegowda VR, Brown G, Matte T, Bassett M, Frieden TR. Trends and racial/ethnic disparities in gestational diabetes among pregnant women in New York City, 1990–2001. Am J Public Health 2005; 95: 15361539.
  • 19
    Ferrara A, Kahn HS, Quesenberry CP, Riley C, Hedderson MM. An increase in the incidence of gestational diabetes mellitus: Northern California, 1991–2000. Obstet Gynecol 2004; 103: 526533.
  • 20
    Gunton JE, Hitchman R, McElduff A. Effects of ethnicity on glucose tolerance, insulin resistance and beta cell function in 223 women with an abnormal glucose challenge test during pregnancy. Aust NZ J Obstet Gynaecol 2001; 41: 182186.
  • 21
    Dooley SL, Metzger BE, Cho NH. Influence of race on disease prevalence and perinatal outcome in a U.S. population. Diabetes 1991; 40: 2529.
  • 22
    Cabacungan ET, Ngui EM, McGinley EL. Racial/ethnic disparities in maternal morbidities: a statewide study of labor and delivery hospitalizations in Wisconsin. Matern Child Health J 2012; 16: 14661467.
  • 23
    Zhang L, Cox RG, Graham J, Johnson D. Association of maternal medical conditions and unfavorable birth outcomes: findings from the 1996–2003 Mississippi linked birth and death data. Matern Child Health J 2011; 15: 910920.
  • 24
    Carter MF, Fowler S, Holden A, Xenakis E, Dudley D. The late preterm birth rate and its association with comorbidities in a population-based study. Am J Perinatol 2011; 28: 703707.
  • 25
    Cohen GR, Curet LB, Levine RJ, Ewell MG, Morris CD, Catalano PM, Clokey D, Klebanoff MA. Ethnicity, nutrition, and birth outcomes in nulliparous women. Am J Obstet Gynecol 2001; 185: 660667.
  • 26
    Xu X, Grigorescu V, Siefert KA, Lori JR, Ransom SB. Cost of racial disparity in preterm birth: evidence from Michigan. J Health Care Poor Underserved 2009; 20: 729747.
  • 27
    Karagiannis G, Akolekar R, Sarquis R, Wright D, Nicolaides KH. Prediction of small-for-gestation neonates from biophysical and biochemical markers at 11–13 weeks. Fetal Diagn Ther 2011; 29: 148154.
  • 28
    Alexander GR, Kogan MD, Himes JH, Mor JM, Goldenberg R. Racial differences in birthweight for gestational age and infant mortality in extremely-low-risk US populations. Paediatr Perinat Epidemiol 1999; 13: 205217.
  • 29
    Frisbie WP, Biegler M, de Turk P, Forbes D, Pullum SG. Racial and ethnic differences in determinants of intrauterine growth retardation and other compromised birth outcomes. Am J Public Health 1997; 87: 19771983.
  • 30
    Poon LC, Karagiannis G, Stratieva V, Syngelaki A, Nicolaides KH. First-trimester prediction of macrosomia. Fetal Diagn Ther 2011; 29: 139147.
  • 31
    Gregory KD, Korst LM. Age and racial/ethnic differences in maternal, fetal, and placental conditions in laboring patients. Am J Obstet Gynecol 2003; 188: 16021608.
  • 32
    Getahun D, Strickland D, Lawrence JM, Fassett MJ, Koebnick C, Jacobsen SJ. Racial and ethnic disparities in the trends in primary cesarean delivery based on indications. Am J Obstet Gynecol 2009; 201: 422.e17.
  • 33
    Bryant AS, Washington S, Kuppermann M, Cheng YW, Caughey AB. Quality and equality in obstetric care: racial and ethnic differences in caesarean section delivery rates. Paediatr Perinat Epidemiol 2009; 23: 454462.
  • 34
    Robinson HP, Fleming JE. A critical evaluation of sonar crown rump length measurements. Br J Obstet Gynaecol 1975; 182: 702710.
  • 35
    Snijders RJ, Noble P, Sebire NJ, Souka AP, Nicolaides KH. UK multicentre project on assessment of risk of trisomy 21 by maternal age and fetal nuchal-translucency thickness at 10–14 weeks of gestation. Fetal Medicine Foundation First Trimester Screening Group. Lancet 1998; 352: 343346.
  • 36
    Syngelaki A, Chelemen T, Dagklis T, Allan L, Nicolaides KH. Challenges in the diagnosis of fetal non-chromosomal abnormalities at 11–13 weeks. Prenat Diagn 2011; 31: 90102.
  • 37
    Brown MA, Lindheimer MD, de Swiet M, Van Assche A, Moutquin JM. The classification and diagnosis of the hypertensive disorders of pregnancy: statement from the International Society for the Study of Hypertension in Pregnancy (ISSHP). Hypertens Pregnancy 2001; 20: IX–XIV.
  • 38
    World Health Organization. Definition and Diagnosis of Diabetes Mellitus and Intermediate Hyperglycaemia. Report of a WHO/IDF consultation. WHO: Geneva, 2006; pp 146 (
  • 39
    Poon LC, Volpe N, Muto B, Syngelaki A , Nicolaides KH. Birthweight with gestation and maternal characteristics in live births and stillbirths. Fetal Diagn Ther 2012; 32: 156165.
  • 40
    Willinger M, Ko CW, Reddy UM. Racial disparities in stillbirth risk across gestation in the United States. Am J Obstet Gynecol 2009; 201: 469.e18.
  • 41
    Centre for Maternal and Child Enquiries (CMACE). Perinatal Mortality 2008: United Kingdom. CMACE: London, 2010.
  • 42
    Rowland Hogue CJ, Silver RM. Racial and ethnic disparities in United States: stillbirth rates: trends, risk factors, and research needs. Semin Perinatol 2011; 35: 221233.
  • 43
    Mathews TJ, MacDorman MF. Infant mortality statistics from the 2005 period linked birth/infant death data set. Natl Vital Stat Rep 2008; 57: 132.
  • 44
    Messer LC, Kaufman JS, Mendola P, Laraia BA. Black-white preterm birth disparity: a marker of inequality. Ann Epidemiol 2008; 18: 851858.
  • 45
    Balchin I, Steer PJ. Race, prematurity and immaturity. Early Hum Dev 2007; 83: 749754.
  • 46
    Goldenberg RL, Klebanoff MA, Nugent R, Krohn MA, Hillier S, Andrews WW. Bacterial colonization of the vagina during pregnancy in four ethnic groups. Vaginal Infections and Prematurity Study Group. Am J Obstet Gynecol 1996; 174: 16181621.
  • 47
    Celik E, To M, Gajewska K, Smith GC, Nicolaides KH; Fetal Medicine Foundation Second Trimester Screening Group. Cervical length and obstetric history predict spontaneous preterm birth: development and validation of a model to provide individualized risk assessment. Ultrasound Obstet Gynecol 2008; 31: 549554.
  • 48
    Ramaraj R, Chellappa P. Cardiovascular risk in South Asians. Postgrad Med J 2008; 84: 518523.
  • 49
    Cappuccio FP. Ethnicity and cardiovascular risk: variations in people of African ancestry and South Asian origin. J Hum Hypertens 1997; 11: 571576.
  • 50
    Cappuccio FP, Cook DG, Atkinson RW, Strazzullo P. Prevalence, detection, and management of cardiovascular risk factors in different ethnic groups in south London. Heart 1997; 78: 555563.
  • 51
    National Collaborating Centre for Women's and Children's Health. Hypertension in Pregnancy: the Management of Hypertensive Disorders During Pregnancy (full NICE guideline). Royal College of Obstetricians and Gynaecologists: London, UK, 2010.
  • 52
    Shai I, Jiang R, Manson JE, Stampfer MJ, Willett WC, Colditz GA, Hu FB. Ethnicity, obesity, and risk of type 2 diabetes in women: a 20-year follow-up study. Diabetes Care 2006; 29: 15851590.
  • 53
    National Collaborating Centre for Women's and Children's Health. Diabetes in Pregnancy: Management of Diabetes and its Complications from Pre-conception to the Postnatal Period (full NICE guideline). Royal College of Obstetricians and Gynaecologists: London, UK, 2008.
  • 54
    Chung JH, Garite TJ, Kirk AM, Hollard AL, Wing DA, Lagrew DC. Intrinsic racial differences in the risk of cesarean delivery are not explained by differences in caregivers or hospital site of delivery. Am J Obstet Gynecol 2006; 194: 13231328.
  • 55
    Aron DC, Gordon HS, DiGiuseppe DL, Harper DL, Rosenthal GE. Variations in risk-adjusted cesarean delivery rates according to race and health insurance. Med Care 2000; 38: 3544.
  • 56
    Braveman P, Egerter S, Edmonston F, Verdon M. Racial/ethnic differences in the likelihood of cesarean delivery, California. Am J Public Health 1995; 85: 625630.
  • 57
    Nicolaides KH. The 11–13 weeks assessment as the base of a new pyramid of pregnancy care. Fetal Diagn Ther 2011; 29: 183196.