Hannah Blencowe|Julia Krasevec|Mercedes de Onís|Robert E. Black|Xiaoyi An|Gretchen A Stevens|Elaine Borghi|Chika Hayashi|Diana Estevez|Luca Cegolon??|Suhail Shiekh|Victoria Ponce Hardy|Joy E Lawn|Simon Cousens
National, regional, and worldwide estimates of low birthweight in 2015, with trends from 2000: a systematic analysis
London School of Hygiene & Tropical Medicine|United Nations Children's Fund|World Health Organization|Johns Hopkins University|United Nations Children's Fund|World Health Organization|World Health Organization|United Nations Children's Fund|World Health Organization|IRCCS Materno Infantile Burlo Garofolo|London School of Hygiene & Tropical Medicine|Azienda ULSS 9 TREVISO|London School of Hygiene & Tropical Medicine|London School of Hygiene & Tropical Medicine|London School of Hygiene & Tropical Medicine|London School of Hygiene & Tropical Medicine
low birthweight lbw less 2500 g important marker maternal fetal health predicting mortality stunting adultonset chronic conditions global nutrition targets set world health assembly 2012 include ambitious 30 reduction lbw prevalence 2012 2025 estimates track progress towards target lacking analysis aim assist setting baseline assess progress towards achievement world health assembly targetswe sought identify available lbw input data livebirths years 200016 considered populationbased national nationally representative datasets inclusion contained information birthweight lbw prevalence livebirths new method survey adjustment developed used 57 countries higher quality timeseries data smoothed countryreported trends birthweight data use bspline regression countries estimated lbw prevalence trends use restricted maximum likelihood approach countrylevel random effects uncertainty ranges obtained bootstrapping results summed regional worldwide levelwe collated 1447 countryyears birthweight data 281 million births 148 countries 195 un member states 47 countries data meeting inclusion criteria estimated worldwide lbw prevalence 2015 146 uncertainty range ur 124171 compared 175 141213 2000 average annual reduction rate aarr 123 2015 estimated 205 million ur 174240 million livebirths lbw 91 lowandmiddle income countries mainly southern asia 48 subsaharan africa 24although estimates suggest progress reducing lbw 2000 2015 achieving 274 aarr required 2012 2025 meet global nutrition target require doubling progress involving improved measurement programme investments address causes lbw throughout lifecyclebill melinda gates foundation childrens investment fund foundation united nations childrens fund unicef