The World Health Organization multinational study of breast-feeding and lactational amenorrhea. III. Pregnancy during breast-feeding Academic Article uri icon

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abstract

  • OBJECTIVE: To determine the risk of pregnancy during lactational amenorrhea relative to infant feeding status. DESIGN: Prospective longitudinal study. SETTING: Five developing and two developed countries. PATIENT(S): Four thousand one hundred eighteen breast-feeding mother-infant pairs. INTERVENTION(S): Infant feeding practices, menstrual status, and pregnancy were measured. MAIN OUTCOME MEASURE(S): Life-table rates of pregnancy. RESULT(S): In the first 6 months after childbirth, cumulative pregnancy rates during amenorrhea, depending on how the end of amenorrhea was defined, ranged from 0.9% (95% confidence interval [CI] = 0%-2%) to 1.2% (95% CI = 0%-2.4%) during full breast-feeding, and from 0.7% (95% CI = 0.1%-1.3%) to 0.8% (95% CI = 0.2%-1.4%) up to the end of partial breast-feeding. At 12 months, the rates ranged from 6.6% (95% CI = 1.9%-11.2%) to 7.4% (95% CI = 2.5%-12.3%) during full breast-feeding, and from 3.7% (95% CI = 1.9%-5.5%) to 5.2% (95% CI = 3.1%-7.4%) up to the end of partial breast-feeding. CONCLUSION(S): These results support the Bellagio Consensus on the use of lactational amenorrhea for family planning, and confirm that the lactational amenorrhea method is a viable approach to postpartum contraception.

authors

  • Van Look, PFA
  • von Hertzen, H
  • Glasier, A
  • Howie, PW
  • Kennedy, KI
  • Thalabard, JC
  • Labbok, M
  • Bhatnagar, S
  • Burger, HG
  • Delgado, HL
  • Dada, OOA
  • Gross, BA
  • Hofvander, Y
  • Lavin, PA
  • Guang-hua, T
  • Ayeni, Olufemi
  • Pinol, APY
  • Chevrot, AJM
  • Vucurevic, M
  • Nagi, VS

publication date

  • September 1999