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Abstract：
The systematic review and meta-analysis were conducted to ascertain the prevalence of anemia, iron deficiency (ID), and iron deficiency anemia (IDA) among Chinese pregnant women. A total of 722 articles on maternal anemia during pregnancy published between January 2010 and December 2020 were compiled, and a systematic review and meta-analysis were conducted on 57 eligible studies including 1,376,204 pregnant women to ascertain the prevalence of anemia and the prevalence in different subgroups. The results showed that the prevalence of anemia, ID, and IDA among pregnant women in China were 30.7% (95% CI: 26.6%, 34.7%), 45.6% (95% CI: 37.0%, 54.2%), and 17.3% (95% CI: 13.9%, 20.7%), respectively. All prevalence increased with the progression of the pregnancy. There were sizable regional variations in the prevalence of anemia, ID, and IDA. Generally, lower prevalence was observed in the economically more advanced eastern region of the country, while the prevalence of ID was higher in the eastern region than that in the western region. The prevalence of anemia and IDA in rural areas was higher than that in urban areas, but ID prevalence was higher in urban areas. In conclusion, the regional differences and urban-rural disparities in the prevalence of anemia indicate the need for more context-specific interventions to prevent and treat anemia. It was found that dietary factors were one of the major causes of anemia, and iron-containing supplements and nutrition counseling could be effective interventions to reduce the prevalence of anemia, ID, and IDA among Chinese pregnant women.
摘要：
进行系统评价和荟萃分析以确定贫血的患病率。缺铁（ID），中国孕妇缺铁性贫血（IDA）。共收集了2010年1月至2020年12月期间发表的722篇关于妊娠期贫血的文章。对包括1,376,204名孕妇在内的57项符合条件的研究进行了系统评价和荟萃分析,以确定贫血的患病率和不同亚组的患病率.结果表明,贫血的患病率,ID,中国孕妇中的IDA为30.7%(95%CI：26.6%，34.7%），45.6%（95%CI：37.0%，54.2%)，和17.3%（95%CI：13.9%，20.7%），分别。所有患病率随着妊娠的进展而增加。贫血的患病率有相当大的地区差异，ID,和IDA。一般来说,在该国经济较发达的东部地区，患病率较低，东部地区的ID患病率高于西部地区。农村地区贫血和IDA患病率高于城市地区,但城市地区的ID患病率较高。总之,贫血患病率的地区差异和城乡差异表明,需要更多针对具体环境的干预措施来预防和治疗贫血.研究发现，饮食因素是贫血的主要原因之一，含铁补充剂和营养咨询可以成为降低贫血患病率的有效干预措施，ID,和IDA在中国孕妇中。
