【How-to】How to calculate infant mortality rate

Historically, the infant death rate has declined over time. In 1900, the infant death rate was 157.1 deaths per 1,000 live births and in 1970, the infant death rate was 20.3. By 1990, the rate had declined to 10.7 and then again to 7.1 deaths per 1,000 live births in 2010.