Sudden infant death syndrome (SIDS) and the routine otoacoustic emission infant hearing screening test: an epidemiological retrospective case-control study.

The noise was also significantly higher among the control infants at 1 kHz (p=0.023) and almost significant at 1.5 kHz (p=0.06).

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2 Longitudinal data collected in Avon suggest not only that there has been a shift towards poorer families but that prone positioning is still a feature of these deaths 3 and bed-sharing in hazardous conditions (next to a parent who has consumed alcohol, drugs or regularly smokes or uses an unsafe sleeping surface such as a sofa) has emerged as a highly significant risk factor. 4 8 We conducted a retrospective case–control study of SIDS infants and surviving controls primarily to investigate whether decreased OAE signal recordings in the right ear are associated with an increased risk of SIDS, and secondarily to investigate any recent changes in epidemiological characteristics.

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