Is the survival rate of 34 weeks premature high?

34 weeks of premature infants, survival rate needs to be determined according to the specific conditions of the child, if the child's weight reaches more than 1.5 kg, there is spontaneous breathing, heart function and feeding status is better, the general survival rate is relatively high, if the child's birth weight is less than 1.5 Kg, each organ is abnormal, the survival rate is relatively low.