Yuhong Chen1, Xiaocheng Li1, Liming Zhao1, Gang Wu2. 1. Department of Vascular Surgery, Liuzhou People's Hospital, Liuzhou, 545006, China. 2. Department of Neurosurgery, Liuzhou People's Hospital, No. 8 Wenchang Road, Liuzhou, 545006, China. wuganglz_86a@tom.com.
Abstract
OBJECTIVE: Previous studies suggest a relationship between sleep disordered breathing (SDB) and lower extremity artery disease (LEAD) though disagreements remain. This study was performed to assess the association between SDB and LEAD in a metaanalysis. METHODS: PubMed and Embase databases were searched for observational studies. A random-effects model incorporating between-study heterogeneity was used to pool the data. RESULTS: The search revealed 7 studies including 152,885 participants. Patients with SDB had higher odds of LEAD (risk ratio [RR] = 1.32, 95% confidence interval [CI] = 1.07 to 1.63, p = 0.01, I 2 = 66%) compared to non-SDB participants. In subgroup analyses, SDB was related to higher odds of LEAD in patients with stroke or diabetes (RR = 3.28, p < 0.001) than in a community-derived population (RR = 1.17, p = 0.08; p for subgroup difference < 0.001). Furthermore, the odds of LEAD was increased in patients with moderate (RR = 1.34, 95% CI = 1.04 to 1.73, p = 0.02) or severe SDB (RR = 1.81, 95% CI = 1.08 to 3.03, p = 0.02), but not in those with mild SDB (RR = 0.94, 95% CI = 0.69 to 1.29, p = 0.71). Differences in study design or methods for LEAD diagnosis did not appear to affect the association between SDB and LEAD. CONCLUSIONS: Patients with SDB have higher odds of LEAD compared to non-SDB participants.
OBJECTIVE: Previous studies suggest a relationship between sleep disordered breathing (SDB) and lower extremity artery disease (LEAD) though disagreements remain. This study was performed to assess the association between SDB and LEAD in a metaanalysis. METHODS: PubMed and Embase databases were searched for observational studies. A random-effects model incorporating between-study heterogeneity was used to pool the data. RESULTS: The search revealed 7 studies including 152,885 participants. Patients with SDB had higher odds of LEAD (risk ratio [RR] = 1.32, 95% confidence interval [CI] = 1.07 to 1.63, p = 0.01, I 2 = 66%) compared to non-SDB participants. In subgroup analyses, SDB was related to higher odds of LEAD in patients with stroke or diabetes (RR = 3.28, p < 0.001) than in a community-derived population (RR = 1.17, p = 0.08; p for subgroup difference < 0.001). Furthermore, the odds of LEAD was increased in patients with moderate (RR = 1.34, 95% CI = 1.04 to 1.73, p = 0.02) or severe SDB (RR = 1.81, 95% CI = 1.08 to 3.03, p = 0.02), but not in those with mild SDB (RR = 0.94, 95% CI = 0.69 to 1.29, p = 0.71). Differences in study design or methods for LEAD diagnosis did not appear to affect the association between SDB and LEAD. CONCLUSIONS:Patients with SDB have higher odds of LEAD compared to non-SDB participants.
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