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William Snow, M.D.
JAMA. 1951;145(3):175. doi:10.1001/jama.1951.02920210047023.
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To the Editor:—  The editorial "Maternal Deaths—One in a Thousand" in The Journal of Nov. 25, 1950, calls attention to an important advance in medicine. The listed causes for this great progress are (1) the use of antibiotics as well as sulfonamides and whole blood derivatives, (2) prenatal care of health and diet of the mother, (3) antiseptics and general cleanliness and (4) improved undergraduate and postgraduate medical training in obstetrics.All these factors are significant in reducing morbidity and mortality. Roentgen cephalopelvimetry is one more outstanding factor that has definitely contributed to this improvement. To date my co-workers and I made about 15,000 such studies. These are done in most instances about two weeks before the estimated delivery date. Patients may be classified by this method into three groups: (1) those with definite cephalopelvic disproportion, (2) those with borderline problems and (3) those with no evidence of disproportion or


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