Definitions

Data refer to the proportion of women aged 15-49 years with a haemoglobin concentration less than 120 g/L for non-pregnant women and lactating women, and less than 110 g/L for pregnant women, adjusted for altitude and smoking.
Refer to SDG global metadata for more information.

Concepts

Data are defined according to the International Classification of Diseases, 11th Revision (ICD-11) codes: Iron deficiency (5B5K.0), and Iron deficiency anaemia (3A00).
Refer to SDG global metadata for more information.

Computational Method

Adjustment of data on blood haemoglobin concentrations for altitude and smoking was carried out whenever possible. Biologically implausible haemoglobin values (<25 g/L or >200 g/L) were excluded. A Bayesian hierarchical mixture model was used to estimate haemoglobin distributions and systematically addressed missing data, non-linear time trends, and representativeness of data sources.
Refer to SDG global metadata for more information.

Disaggregation

Disaggregation is available by pregnancy status.

Data Source

World Health Organisation (WHO)

Data Collection

Data are from the Micronutrients Database of the WHO Vitamin and Mineral Nutrition Information System (VMNIS).
Refer to SDG global metadata for more information.

Time Period

2005 onwards

Frequency

Annual

SDG Global Metadata

Link to United Nations SDG global metadata

Indicator 2.2.3