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The incidence of preterm birth (gestational age <37 weeks) worldwide was 15·2 million in 2019, occurring in 11% of livebirths.1,2 In 2015, an estimated 20·5 million livebirths globally were low birthweight (LBW; weight <2500g at birth).3 The survival, health, growth, and neurodevelopment of preterm and LBW infants lags behind that of full-term infants and special care is needed for these vulnerable infants.4,5 Preterm and LBW infants are susceptible to impaired respiration, difficulty feeding, growth failure, poor body temperature regulation, and infection.
Darmstadt et al. (Tue,) studied this question.