标题：Vitamin A and risk of cervical cancer: A meta-analysis
作者：Zhang, Xingliang; Dai, Bingqin; Zhang, Bingzhen; Wang, Zhiping
作者机构：[Zhang, Xingliang; Dai, Bingqin; Zhang, Bingzhen; Wang, Zhiping] Shandong Univ, Sch Publ Hlth, Dept Epidemiol & Hlth Stat, Jinan 250012, Shandong, Peo 更多
通讯作者地址：[Wang, ZP]Shandong Univ, Sch Publ Hlth, Dept Epidemiol & Hlth Stat, 44 Wenhua Xi Rd, Jinan 250012, Shandong, Peoples R China.
关键词：Uterine cervical neoplasms; Vitamin A; Carotenoids; Meta-analysis
摘要：Objective: To conduct a systematic review with meta-analysis of studies assessing the association of vitamin A (retinol, carotene and other carotenoids) intake or blood (serum or plasma) levels of vitamin A (retinol and carotene) with risk of cervical cancer.; Methods: We evaluated the studies published in English and Chinese on diet or blood vitamin A for the risk of cervical cancer. We also reviewed reference lists from retrieved articles. Meta-analysis was applied to calculate the combined effect values and their 95% confidence intervals. The risk of bias was assessed by the Egger regression asymmetry test.; Results: As many as 11 articles on dietary vitamin A and 4 articles on blood vitamin A were selected according to the eligibility criteria and were included in the meta-analysis, for a total of 12,136 participants. The pooled odds ratios (ORs) of cervical cancer were 0.59 (95% CI, 0.49-0.72) for total vitamin A intake and 0.60 (95% CI, 0.41-0.89) for blood vitamin A levels. The combined ORs of cervical cancer were 0.80 (95% CI, 0.64-1.00), 0.51 (95% CI, 0.35-0.73) and 0.60 (95% CI, 0.43-0.84) for retina carotene and other carotenoid intake, and 1.14 (95% CI, 0.83-1.56) and 0.48 (95% CI, 0.30-0.77) for blood retinol and carotene.; Conclusions: Vitamin A intake and blood vitamin A levels were inversely associated with the risk of cervical cancer in this meta-analysis. (C) 2011 Elsevier Inc. All rights reserved.