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. Author manuscript; available in PMC: 2013 Dec 1.
Published in final edited form as: Int J Obes (Lond). 2012 Sep 11;37(6):835–842. doi: 10.1038/ijo.2012.138

Figure 2.

Figure 2

Figure 2

Figure 2

Figure 2

Three-dimensional plots for leptin as a function of BMI and four alternative obstructive sleep apnea (OSA) severity measures: a) apnea-hypopnea index (AHI); b) oxygen desaturation index (ODI); c) Hypoxia time (minutes with SaO2 < 90%); and d) minimum SaO2. The significance of associations between leptin levels and sleep apnea severity, obesity and their interaction are shown below the figures. A significant association of obesity and leptin levels is found but no association of OSA and leptin levels and no interaction of OSA and obesity. All plots are adjusted for gender.