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. Author manuscript; available in PMC: 2019 Dec 1.
Published in final edited form as: Obstet Gynecol Clin North Am. 2018 Oct 25;45(4):613–628. doi: 10.1016/j.ogc.2018.07.004

Table 1.

Cycles without luteal activity identified in the SWAN DHS and their hormonal and expected menstrual correlates

Hormonal
Pattern		 LH surge Pdg pattern Bleeding
pattern
Estrogen
rise		 + Variable
but low		 Menses
when
estrogen
falls
Estrogen
rise		 − Variable
but low		 Menses
when
estrogen
falls
No
estrogen
rise		 N/A None No menses