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. 2017 May 17;152(5):1070–1086. doi: 10.1016/j.chest.2017.05.009

Figure 5.

Figure 5

Prospective studies examining the independent association between OSA severity and glycemic control assessed by HbA1c in type 2 diabetes. HbA1c has been adjusted for important confounders and represents the difference between severe OSA and no/mild OSA. In the study by Grimaldi et al, the highest quartile of the apnea-hypopnea index (AHI) during rapid eye movement (REM) sleep was compared with the lowest quartile or REM AHI. The mean total AHI in the highest quartile of REM AHI was 47 events/h. In contrast, the mean total AHI in the lowest quartile of REM AHI was 9 events/h. HbA1c = hemoglobin A1c.