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. Author manuscript; available in PMC: 2005 Dec 15.
Published in final edited form as: J Clin Endocrinol Metab. 2004 Oct 13;90(1):211–218. doi: 10.1210/jc.2004-0834

Fig. 5.

Fig. 5

ApEn of LH concentration time series in young and older men administered either placebo (control) or anastrozole for 5 d. The panels show observed LH ApEn (top panel) and the ApEn ratio (middle panel). A higher value of either ApEn measure denotes greater irregularity (reduced orderliness) of the LH release process. Conversely, a lesser absolute number of sds separating observed from mean random ApEn (lower panel) signifies greater irregularity. Data are presented as described in the legend of Fig. 2.