TY - JOUR
T1 - Gender of Infants Conceived on Different Days of the Menstrual Cycle
AU - Vollman, Rudolf F.
AU - James, William H.
AU - Corson, Stephen L.
AU - Rosner, Fred
AU - Harlap, Susan
PY - 1979/11/15
Y1 - 1979/11/15
N2 - To the Editor: I think that some questions must be raised about Dr. Harlap's study in the June 28 issue. Mothers were interviewed on the first day post partum concerning the length of the last three menstrual cycles before conception. No confirming interviews were given at a later time. It is now well documented that recall of the length of cycles is generally very poor1,2; it is probably not better after labor, anesthesia, analgesia, and blood loss. Of the three cycles “the mid-point” was selected as the typical cycle length — perpetuating the fictitious determination of cycle length. The.
AB - To the Editor: I think that some questions must be raised about Dr. Harlap's study in the June 28 issue. Mothers were interviewed on the first day post partum concerning the length of the last three menstrual cycles before conception. No confirming interviews were given at a later time. It is now well documented that recall of the length of cycles is generally very poor1,2; it is probably not better after labor, anesthesia, analgesia, and blood loss. Of the three cycles “the mid-point” was selected as the typical cycle length — perpetuating the fictitious determination of cycle length. The.
UR - http://www.scopus.com/inward/record.url?scp=0018792959&partnerID=8YFLogxK
U2 - 10.1056/NEJM197911153012017
DO - 10.1056/NEJM197911153012017
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C2 - 492264
AN - SCOPUS:0018792959
SN - 0028-4793
VL - 301
SP - 1125
EP - 1126
JO - New England Journal of Medicine
JF - New England Journal of Medicine
IS - 20
ER -