Williams Anne M, Ansai Nicholas, Ahluwalia Namanjeet, Nguyen Duong T
NCHS Data Brief. 2024 Dec(519). doi: 10.15620/cdc/168890.
This report provides estimates of anemia prevalence during August 2021âAugust 2023 by sex, age, race and Hispanic origin, and poverty income ratio, a measure of family income.
Data from the August 2021âAugust 2023 National Health and Nutrition Examination Survey were used to calculate anemia prevalence for people age 2 years and older using phlebotomy sample weights. Anemia was defined as hemoglobin (Hb) less than 11.0 g/dL for children ages 2â4; Hb less than 11.5 g/dL for children 5â11; Hb less than 12.0 g/dL for children 12â14 and females 15 and older, and Hb less than 13.0 g/dL for males 15 and older. Differences between estimates overall and among subgroups were evaluated using t tests at the 0.05 level. Linear regression was used to test the significance of a linear trend by family income. All analyses accounted for the surveyâs complex, multistage probability design.
During August 2021âAugust 2023, the overall prevalence of anemia in people age 2 and older was 9.3%, and prevalence was higher in females (13.0%) than in males (5.5%). The prevalence of anemia in Black non-Hispanic people was higher than in all other race and Hispanic-origin groups. Anemia prevalence increased with decreasing income overall. In all race and Hispanic-origin groups and income groups, females had higher anemia prevalence than males.
本报告提供了2021年8月至2023年8月期间按性别、年龄、种族和西班牙裔血统以及贫困收入比（家庭收入的一种衡量指标）划分的贫血患病率估计值。
使用2021年8月至2023年8月全国健康和营养检查调查的数据，通过静脉穿刺样本权重计算2岁及以上人群的贫血患病率。贫血定义为：2至4岁儿童血红蛋白（Hb）低于11.0 g/dL；5至11岁儿童Hb低于11.5 g/dL；12至14岁儿童及15岁及以上女性Hb低于12.0 g/dL；15岁及以上男性Hb低于13.0 g/dL。总体估计值与亚组估计值之间的差异使用0.05水平的t检验进行评估。线性回归用于检验家庭收入线性趋势的显著性。所有分析均考虑了调查的复杂多阶段概率设计。
在2021年8月至2023年8月期间，2岁及以上人群贫血的总体患病率为9.3%，女性患病率（13.0%）高于男性（5.5%）。非西班牙裔黑人的贫血患病率高于所有其他种族和西班牙裔血统群体。总体而言，贫血患病率随收入降低而增加。在所有种族和西班牙裔血统群体以及收入群体中，女性的贫血患病率均高于男性。
