biostudies-literatureChawanpaiboon SWorld Health OrganizationWorld Bank GroupMarch of Dimes FoundationUnited Nations Development ProgrammeUNICEFUnited Nations Population Funde37-e46https://www.ebi.ac.uk/biostudies/studies/S-EPMC6293055biostudies-literatureUnknown7(1)<h4>Background</h4>Preterm birth is the leading cause of death in children younger than 5 years worldwide. Although preterm survival rates have increased in high-income countries, preterm newborns still die because of a lack of adequate newborn care in many low-income and middle-income countries. We estimated global, regional, and national rates of preterm birth in 2014, with trends over time for some selected countries.<h4>Methods</h4>We systematically searched for data on preterm birth for 194 WHO Member States from 1990 to 2014 in databases of national civil registration and vital statistics (CRVS). We also searched for population-representative surveys and research studies for countries with no or limited CRVS data. For 38 countries with high-quality data for preterm births in 2014, daThe Lancet. Global healthGlobal, regional, and national estimates of levels of preterm birth in 2014: a systematic review and modelling analysis.PMC6293055001Teng DNZhang JLumbiganon PRattanakanokchai SKongwattanakul KThinkhamrop JZhou WWatananirun KVogel JPLaopaiboon MHogan DGulmezoglu AMPetzold MMoller ABJampathong NLewis CLandoulsi SChawanpaiboon SfalseGlobal, regional, and national estimates of levels of preterm birth in 2014: a systematic review and modelling analysis.<h4>Background</h4>Preterm birth is the leading cause of death in children younger than 5 years worldwide. Although preterm survival rates have increased in high-income countries, preterm newborns still die because of a lack of adequate newborn care in many low-income and middle-income countries. We estimated global, regional, and national rates of preterm birth in 2014, with trends over time for some selected countries.<h4>Methods</h4>We systematically searched for data on preterm birth for 194 WHO Member States from 1990 to 2014 in databases of national civil registration and vital statistics (CRVS). We also searched for population-representative surveys and research studies for countries with no or limited CRVS data. For 38 countries with high-quality data for preterm births in 2014, da2019-01-01T00:00:00Z2019 Jan2026-07-16T16:01:03.953Z2019-03-27T00:13:14ZS-EPMC62930553038945110.1016/S2214-109X(18)30451-0