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The purpose of this study was to assess the practice of a group of non-nurse midwives by comparing the outcomes of their deliveries to the standard of hospital-based physicians. This was done by means of a matching procedure designed to equate the populations on major medical risk factors. The first phase of the study used all physicians and found major differences favoring the midwives. The second phase of the study used the least interventionist half of the physician group and found minimal differences between midwives at home and physicians in the hospital. It is suggested that excessive intervention is not without risk regardless of who does it.
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Mehl et al. (1981) studied this question.
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