The assumption here being that a live birth is as likely in France as it is in the US. What we should be looking for is percentage of survival for infants born sub 25ish weeks or something like that (I don't have that data).
UPDATE: And as we see from this paper from the WHO, live birth in the US is not what it means in France, for example. In the US it's any sign of life, in France and Belgium it's living for some period of time: "it has also been common practice in several countries (e.g. Belgium, France, Spain) to register as live births only those infants who survived for a specified period beyond birth"
UPDATE: And as we see from this paper from the WHO, live birth in the US is not what it means in France, for example. In the US it's any sign of life, in France and Belgium it's living for some period of time: "it has also been common practice in several countries (e.g. Belgium, France, Spain) to register as live births only those infants who survived for a specified period beyond birth"
http://www.who.int/bulletin/volumes/86/6/07-043471/en/