Background. Preterm infants are immunologically immature at birth. Previous studies have
demonstrated that human milk protects against infection in full-term infants, but there are few …

US births increased 3% between 2005 and 2006 to 4265996, the largest number since
1961. The crude birth rate rose 1%, to 14.2 per 1000 population, and the general fertility rate …

The number of births in the United States declined by 1% between 2010 and 2011, to a total
of 3 953 593. The general fertility rate also declined by 1% to 63.2 births per 1000 women …

The impact of day‐care participation during the first 3 years of life on the cognitive
functioning of school age children was examined. 867 5‐and 6‐year‐old children from the …

The crude birth rate in 2002 was 13.9 births per 1000 population, the lowest ever reported
for the United States. The number of births, the crude birth rate, and the fertility rate (64.8) all …

The general fertility rate in 2005 was 66.7 births per 1000 women aged 15 to 44 years, the
highest level since 1993. The birth rate for teen mothers (aged 15 to 19 years) declined by …

Objective To determine whether maternal depressive symptoms, reported when infants are 2
to 4 months old, are associated with mothers' early parenting practices. Design Secondary …

The crude birth rate rose slightly in 2003 to 14.1 births per 1000 population, from 13.9 in
2002. The 2002 rate was the lowest ever reported for the United States. The total number of …

The overall improvement in the health of Americans over the 20th century is best exemplified
by dramatic changes in 2 trends: 1) the age-adjusted death rate declined by about 74 …

The number of births in the United States increased between 2006 and 2007 (preliminary
estimate of 4 317 119) and is the highest ever recorded. Birth rates increased among all age …