Irgens L M, Skjaerven R, Peterson D R
J Pediatr. 1984 Mar;104(3):349-51. doi: 10.1016/s0022-3476(84)81093-8.
Knowledge of the likelihood of a repetition of sudden infant death syndrome within a sibship, particularly in the next sibling, is important to parents. Methodologic considerations with respect to the studies of recurrence risk already published indicate that the rates reported are overestimates. This suspicion is confirmed by our study based on 826,162 infants surviving the first week of life on file in the Medical Birth Registry of Norway. A total of 1062 (1.3 per 1,000) infants died of SIDS; five deaths occurred as the second case in a family. The recurrence risk for the nextborn sibling was 5.6 per 1000, and for all subsequent siblings 4.8 per 1000, which would seem encouragingly low from a counseling point of view.
了解同胞中婴儿猝死综合征再次发生的可能性，尤其是在下一个兄弟姐妹身上发生的可能性，对父母来说很重要。对已发表的复发风险研究的方法学考量表明，所报告的发生率被高估了。我们基于挪威医疗出生登记处记录的826,162名度过生命第一周的婴儿进行的研究证实了这一怀疑。共有1062名（每1000名中有1.3名）婴儿死于婴儿猝死综合征；有5例死亡是家庭中的第二例。下一胎兄弟姐妹的复发风险为每1000名中有5.6例，而所有后续兄弟姐妹的复发风险为每1000名中有4.8例，从咨询的角度来看，这一风险低得令人鼓舞。
