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  • Why the largest study of planned home births won’t sway ACOG

    The internet is abuzz about a new study out of the Netherlands comparing the outcomes of planned home birth with those of planned hospital births in low-risk women. With over half a million women involved in the study, it is the largest of its kind. Its findings provide the best evidence to date that perinatal mortality (death of the baby during or soon after labor and birth) and morbidity (measured by likelihood of NICU admission) are no more common in planned home births than in comparable populations of planned hospital births.

    The American College of Obstetricians and Gynecologists (ACOG) came out against home birth in 2006. They argued that unexpected complications can occur in labor and birth, so the hospital is the safest bet. Despite the existence of a good sized body of literature on home birth, ACOG emphasized the lack of evidence that home birth is safe, concluding that, by default, a policy of universal hospitalization is the optimal way to organize maternity care. ACOG’s statement reads:

    Studies comparing the safety and outcome of U.S. births in the hospital with those occurring in other settings are limited and have not been scientifically rigorous. The development of well-designed research studies of sufficient size, prepared in consultation with obstetric departments and approved by institutional review boards, might clarify the comparative safety of births in different settings. Until the results of such studies are convincing, ACOG strongly opposes out-of-hospital births. (Out-of-hospital births in the United States, ACOG 2006)

    OK, so now we have an enormous study with the statistical power to detect important differences in perinatal mortality. Will ACOG change their tune?

    Some obstetricians may (and to be sure, there are a good number of OBs who already support home birth and home birth midwives), but ACOG as a professional body will most certainly stick to their guns. A closer look at their statement reveals their bias. ACOG pledges to oppose planned home birth unless and until there are large, well-designed studies on the safety and outcomes a) of U.S. births, b) prepared in consultation with obstetric departments, and c) approved by institutional review boards. This is a carefully constructed catch-22.

    Planned home birth accounts for less than 1% of all births in the United States. In order to construct a U.S. study the size of the new Dutch study, every single woman planning a home birth in the United States would have to be enrolled in that study for the next eight years. In addition, we would need reliable databases collecting data about perinatal death based on where a woman planned to give birth, something that the Netherlands has but the U.S. lacks. Even if these hurdles were overcome, obstetric departments and institutional review boards present another barrier. If the dominant view in our maternity care system is that home birth is unsafe, obstetric departments and IRBs would be unlikely to willingly participate in research on hundreds of thousands of babies being born at home.

    ACOG will say that a study in the Netherlands does not apply to U.S.-style maternity care, a claim that has some merit. Because conventional obstetric management holds sway in the U.S., out-of-hospital midwifery is seen as a fringe alternative and poorly integrated into our system here. Contrast that with the Netherlands, where all healthy women are cared for by midwives, and about a third of babies are born at home. Midwives are not just integrated in the system, they run the system. Home birth is certain to be less safe in a system that marginalizes women who choose to give birth at home and the professionals who attend them there.

    A couple of generations ago, obstetricians led a charge in the U.S. to move birth into the hospital without any a priori evidence that hospital birth was any safer. Now that home birth is all but extinct, the “lack of evidence” on planned home birth in the U.S. serves to bolster ACOG’s position. The U.S. is not fertile ground for home birth research because a professional organization looking out for the power and financial interest of its members has run home birth underground and failed to provide the complementary specialist services that ensure continuity of care and safety when complications arise.

    In the U.K., policy makers called obstetricians on the absurdity of their “lack of evidence” claims when the national government set out to reform the maternity care system in the early 1990s. I love this quote from a British policy-maker, shared by Eugene Declercq in his 1998 article, ‘Changing Childbirth’ in the United Kingdom: Lessons for U.S. Health Policy:

    To consider it safer, or even to have a consensus view, is not the same as having evidence . . . are you not saying that you have made a policy on the basis of safety which was not justified on the statistics when they did exist, and now you say there is not any possibility of getting statistics? Is that not putting women into a trap?” (House of Commons Health Committee 1991b: 210–211).

    Today, the debate in the U.K. has moved on from whether to offer access to home birth to how to make sure there are enough midwives to meet the demand.

    We need more and better research on home birth. We can use data from the Netherlands to determine the safety of home birth in systems that support and integrate home birth midwifery. After all, it is the only place left with a maternity care system that lends itself to home birth safety research, and national registers to conduct that research soundly. In the U.S., we must study how we can reform our maternity care system to provide access to midwife-led care in all settings, and best practices for caring for the women who rightly and inevitably will continue to desire birth at home.

    4 Responses to “Why the largest study of planned home births won’t sway ACOG”

    1. Henci Goer Says:

      I don’t doubt that you are correct. ACOG took exactly the same position on freestanding birth centers in the 1980s. Despite sufficient evidence to convince the American Public Health Association: “Births to healthy mothers can occur safely in birth centers outside the setting of an acute care hospital” (1983), ACOG maintained that there wasn’t. Then came the definitive National Birth Center study in 1989. Did ACOG change its mind? Not on your tintype, girly girl. ACOG’s motto when it comes to the research seems to be “My mind is made up; don’t confuse me with the facts.”

      APHA. Guidelines for licensing and regulating birth centers. Am J Public Health 1983;73(3):331-4.

      Rooks JP, Weatherby NL, Ernst EK, et al. Outcomes of care in birth centers. The National Birth Center Study. N Engl J Med 1989;321(26):1804-11.

    2. Peggy Says:

      The Midwives Alliance Division of Research maintains a database of (mostly) out-of-hospital births that is capable of addressing homebirth outcomes with statistical power. Pregnancies are logged prospectively and all records are reviewed for errors. Data is entered, when available, for all clients referred out in pregnancy or transported during labor. The database now contains over 12,000 completed and reviewed records, many thousands more awaiting review and many thousands more awaiting the completion of the pregnancy. Thousands of births are added every year. In addition, the Midwives Alliance has entered into a collaborative agreement with the America College of Nurse-Midwives Division of Research and the Association of Birth Centers Research Committee to identify a core set of common data elements with the same definitions so that there will be congruency among all midwifery datasets. This work will be reported on at the ACNM Annual Meeting in Seattle in May.
      This will eventually create the ability to study many aspects of midwifery processes and outcomes in all settings and with all providers. Midwives Alliance data will be available soon. Interested readers should keep an eye on the main MANA webpage http://www.mana.org for notice of its availability.
      We owe it to ourselves to collect this information and study all these important topics, whether ACOG pays any attention or not!!!!!

    3. Amy Romano Says:

      Thanks for posting this, Peggy. I am a big supporter of MANAStats, and in fact contribute data from my midwifery practice. When this data becomes available for researchers, it will be a gold mine for investigating home birth practice and outcomes. I am also delighted that the collaboration with ACNM and AABC is moving forward, so that we can continue to collect data on midwifery care in all settings. If only such data were collected for all women in all settings going to all kinds of providers (like in the Netherlands!) If ACOG supported such an effort, we could make huge leaps forward in understanding and improving our maternity care system and improving the health of women and babies. Until then, midwives will chug along with our datasets, continuing to demonstrate our outcomes and improve our profession!

    4. Science & Sensibility » YouTube Delivers Where a Maternity Care System Doesn’t? Says:

      [...] warning of a maternity care system that doesn’t function as well as it could. In an era when home birth and birth centers are under attack, while a possible flu pandemic is making hospitalization a risky [...]

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