Chronic Cerebral Hypoxia and Cognitive Impairment: A Systematic Review and Meta-Analysis Based on Chronic Mountain Sickness, Anemia, Chronic Obstructive Pulmonary Disease, and Obstructive Sleep Apnea.

Those without showed only marginally significant global cognition impairment (SMD = −0.3424, p = 0.0351). 3.4 Publication Bias and Sensitivity Analysis In the disease‐cognitive impairment correlation analysis, the funnel plot (Figure S6 ) and Egger's test explicitly confirmed significant publication bias ( P = 0.017).

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