Survival rates of low birth weight babies improve over a decade

US researchers conducted a systematic review of hospital data for more than 350,000 infants born weighing 501–1500g over the decade ending 2009.

They found that the incidence of mortality decreased from 14.3% to 12.4% and that major morbidity in survivors decreased from 46.4% to 41.4%. Infant deaths decreased the most among those born weighing 501–750g, however this group experienced the smallest decrease in the incidence of morbidity.

The authors said survival rates of very low birth weight infants had improved but a high proportion still