"Before 37 weeks
Viability = 24 weeks gestation.
The cutoff point for when doctors will use intensive care to save baby
Likelihood of survival:
24 weeks =39%
25 weeks =50%
26 weeks =80%
27 weeks =90%
28-31 weeks=90-95%
32-33 weeks=95%
34+ weeks = Like a full term baby
Incidence:
10% in developed countries
25% in developing countries
"