In observed group, phenobarbital and nikethamide were given 12 h (subgroup A, n=62), 24 h(subgroup B, n=59) and 48 h (subgroup C, n=55) after birth respectively for prevention of jaundice; whereas no drug was given in the control group.

• 前者分别于出生后 12h(A组 ,n= 62 ) ,2 4h(B组 ,n =5 9)和 48h(C组 ,n =5 5 )给予尼可刹米和苯巴比妥预防性治疗。