• 1
    Sibai B. Diagnosis and management of gestational hypertension and preeclampsia. Obstet Gynecol 2003;102:18192.
  • 2
    Gofton EN, Capewell V, Natale R, Gratton RJ. Obstetrical intervention rates and maternal and neonatal outcomes of women with gestational hypertension. Am J Obstet Gynecol 2001;185:798803.
  • 3
    Sibai BM. Management of late preterm and early-term pregnancies complicated by mild gestational hypertension/pre-eclampsia. Semin Perinatol 2011;35:2926.
  • 4
    National High Blood Pressure Education Program Working Group on High Blood Pressure in Pregnancy. Report of the National High Blood Pressure Education Program Working Group on high blood pressure in pregnancy. Am J Obstet Gynecol 2000;183:S122.
  • 5
    Koopmans CM, Bijlenga D, Groen H, Vijgen SM, Aarnoudse JG, Bekedam DJ, et al. Induction of labour versus expectant monitoring for gestational hypertension or mild pre-eclampsia after 36 weeks’ gestation (HYPITAT): a multicentre, open-label randomised controlled trial. Lancet 2009;374:97988.
  • 6
    NICE. Hypertension in Pregnancy: The Management of Hypertensive Disorders During Pregnancy the Management of Hypertensive Disorders. London: NICE, 2011.
  • 7
    Bishop EH. Pelvic scoring for elective induction. Obstet Gynecol 1964;24:2668.
  • 8
    Laughon SK, Zhang J, Troendle J, Sun L, Reddy UM. Using a simplified Bishop score to predict vaginal delivery. Obstet Gynecol 2011;117:80511.
  • 9
    Follmann D. Subgroups and interactions. In: Gellers NL, editor. Advances in Clinical Trial Biostatistics. New York: Marcel Dekker, Inc, 2004. pp. 12141.
  • 10
    Vahratian A, Zhang J, Troendle JF, Sciscione AC, Hoffman MK. Labor progression and risk of cesarean delivery in electively induced nulliparas. Obstet Gynecol 2005;105:698704.
  • 11
    Luthy DA, Malmgren JA, Zingheim RW. Cesarean delivery after elective induction in nulliparous women: the physician effect. Am J Obstet Gynecol 2004;191:15115.
  • 12
    Vrouenraets FPJM, Roumen FJME, Dehing CJG, van den Akker ES, Aarts MJ, Scheve EJ. Bishop score and risk of cesarean delivery after induction of labor in nulliparous women. Obstet Gynecol 2005;105:6907.
  • 13
    Calkins LA, Irvine JH, Horsley GW. Variation in the length of labor. Am J Obstet Gynecol 1930;19:2947.
  • 14
    Bewley S, Shennan A. HYPITAT and the fallacy of pregnancy interruption. Lancet 2010;375:119; author reply 119–20.