Fig. 1
From: Comparing hemoglobin distributions between population-based surveys matched by country and time
Distributions of hemoglobin concentrations for 8 children’s and 6 women’s surveys (adjusted for altitude). Kernel density plots. Data sources: seven pairs of country surveys conducted between 2009 and 2016 from the Demographic and Health Surveys (DHS) and the Biomarkers Reflecting Inflammation and Nutritional Determinants of Anemia (BRINDA). Total sample: 17,719 children and 21,594 women