Disability-adjusted life year for prematurity and low birth weight per 100,000 inhabitants in 2004.<unk>  complicates the births of infants worldwide affecting 5% to 18% of births. In Europe and many developed countries the<unk>  rate is generally 5–9%, and in the U.S. it has even risen to 12–13% in the last decades. As weight is easier to determine than gestational age, the World Health Organization tracks rates of low birth weight (< 2,500 grams), which occurred in 16.5 percent of births in less developed regions in 2000. It is estimated that one third of these low birth weight deliveries are due to<unk>  delivery. Weight generally correlates to gestational age; however, infants may be underweight for other reasons than a<unk>  delivery. Neonates of low birth weight (LBW) have a birth weight of less than and are mostly but not exclusively<unk>  babies as they also include small for gestational age (SGA) babies. Weight-based classification further recognizes Very Low Birth Weight (VLBW) which is less than 1,500 g, and Extremely Low Birth Weight (ELBW) which is less than 1,000 g. Almost all neonates in these latter two groups are born<unk> . About 75% of nearly a million deaths due to<unk>  deliver would survive if provided warmth, breastfeeding, treatments for infection, and breathing support. Complications from<unk> s resulted in 740,000 deaths in 2013, down from 1.57 million in 1990.
Preterm birth
Breech birth
Low birth weight
Multiple birth
Low Birth Weight
Stillbirth
Birth injury
Birth trauma 