The neonatal nurse researches the neonatal mortality rate in the United States. Which of the ...

The neonatal nurse researches the neonatal mortality rate in the United States. Which of the following accurately describes this measurement of child health? Select all answers that apply.
 
  A) Neonatal mortality is the number of infant deaths occurring in the first 28 days of life per 1,000 live births.
  B) The infant mortality rate refers to the number of deaths occurring in the first 6 months of life.
  C) Neonatal mortality is documented as the number of deaths in relation to 1,000 live births.
  D) The infant mortality rate is used as an index of the general health of a country.
  E) In 2005, the infant mortality rate in the United States was 6.86 per 1,000 live births.
  F) The infant mortality rate is consistent from state to state as well as between ethnic groups.