Scholars have noted that the premature birth rate has risen steadily in the United States during the past 25 years and have used this fact to try to understand the cause of premature birth.1 As part of an on-going epidemiologic review of the history of the etiology of intellectual disability, we examined trends in low-birth-weight births in the United States during the last 5 decades.
Brosco JP, Sanders LM, Guez G, Lantos JD. Historical Trends in Low Birth Weight. Arch Pediatr Adolesc Med. 2010;164(1):99-100. doi:10.1001/archpediatrics.2009.255