> However, the method of calculating IMR often varies widely between countries, and is based on how they define a live birth and how many premature infants are

> However, the method of calculating IMR often varies widely between countries, and is based on how they define a live birth and how many premature infants are born in the country. > Many countries, however, including certain European states (e.g. France) and Japan, only count as live births cases where an infant breathes at birth, which makes their reported IMR numbers somewhat lower https://en.wikipedia.org/wiki/Infant_mortality#Differences_in_measurement https://en.wikipedia.org/wiki/Infant_mortality#Differences_i... edit: other response is admittedly a lot better