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. Author manuscript; available in PMC: 2011 Nov 1.
Published in final edited form as: Arch Biochem Biophys. 2010 Jul 14;503(1):118–128. doi: 10.1016/j.abb.2010.07.006

Figure 1.

Figure 1

The STRAW staging system, showing the relation between alterations in cycle regularity and endocrine changes across the various stages of reproductive aging. (Reproduced from Soules MR, Sherman S, Parrott E, et al. Executive summary: Stages of Reproductive Aging Workshop (STRAW). Fertil Steril 2001;76:874–878; with permission.)