Witnessed sleep apneas together with elevated plasma glucose are predictors of COPD exacerbations.

We observed a highly significant interaction between reported witnessed apneas and baseline plasma glucose level, p = 0.0004.

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Sleep apnea alone without elevated plasma glucose and elevated plasma glucose alone without sleep apnea showed a numerically slightly higher risk, which did not reach statistical significance, HR = 1.31 (0.89–1.92, p = 0.17) and HR = 1.27 (0.80–2.01, p = 0.30), respectively.

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