Erin McLean|Mary E. Cogswell|Ines Egli|Daniel Wojdyla|Bruno de Benoist
Worldwide prevalence of anaemia, WHO Vitamin and Mineral Nutrition Information System, 1993–2005
World Health Organization|Centers for Disease Control and Prevention|National University of Rosario|World Health Organization
provide current global regional estimates anaemia prevalence number persons affected total population population subgroupwe used anaemia prevalence data vitamin mineral nutrition information system 19932005 generate anaemia prevalence estimates countries data representative national level first administrative level national level countries without eligible data employed regressionbased estimates used un human development index hdi health indicators combined country estimates weighted population estimate anaemia prevalence global level un regions category human developmentsurvey data covered 488 global population 761 preschoolaged children 690 pregnant women 735 nonpregnant women estimated global anaemia prevalence 248 95 ci 229 267 affecting 162 billion people 95 ci 150 174 billion estimated anaemia prevalence 474 95 ci 457 491 preschoolaged children 418 95 ci 399 438 pregnant women 302 95 ci 287 316 nonpregnant women numbers 293 million 95 ci 282 303 million preschoolaged children 56 million 95 ci 54 59 million pregnant women 468 million 95 ci 446 491 million nonpregnant women affectedanaemia affects onequarter worlds population concentrated preschoolaged children women making global public health problem data relative contributions causal factors lacking however makes difficult effectively address problem