Soft cot mattresses and the sudden infant death syndrome

N Z Med J. 1996 Jun 14;109(1023):206-7.


Aims: To investigate whether soft cot mattresses are a risk factor for the sudden infant death syndrome (SIDS).

Methods: A follow up postal questionnaire was sent to the subjects who were interviewed 3.8 years (range 2.2 to 5.2 years) previously as part of the New Zealand Cot Death Study, a large nationwide case-control study.

Results: 105 European SIDS cases were compared with 828 European controls. Soft cot mattresses were associated with an increased risk of SIDS (adjusted OR = 2.36; 95% CI = 1.06, 5,25) compared with average or hard mattresses. The firmness of the mattress did not interact with the sleeping position of infant.

Conclusions: Soft cot mattresses should be avoided.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Beds*
  • Humans
  • Infant
  • Risk Factors
  • Sudden Infant Death / etiology*
  • Surveys and Questionnaires