Crib Death Statistics / SIDS Statistics:

Results of New Zealand mattress wrapping campaign for SIDS prevention

patrick jay logo Campaign to Prevent Crib Death - to Prevent SIDS

Start date of publicity promoting mattress-wrapping: 1995

Number of babies slept on wrapped mattresses (to December 2015) At least 245,000 (1)

Reported crib deaths among those babies: None

Crib deaths on unwrapped mattresses (or parallel bedding situations) during the same period: 1047 (2)

Reduction in New Zealand crib death rate since mattress-wrapping commenced: 92% (2)

This major reduction in New Zealand crib death rate cannot be attributed to the crib death prevention advice issued by the New Zealand Ministry of Health. There has been no material change to that advice since 1992; and prior to the introduction of mattress-wrapping the New Zealand crib death rate had been static since 1993.

Publication of results of the New Zealand mattress-wrapping campaign: Two journals of environmental medicine (3,4)

Statistical proof that mattress-wrapping prevents crib death:

p < 1.9 x 10-22 (more than one billion times the level of proof which is usually regarded as establishing a medical proposition) (4)
  1. As of February 2017, 2015 is the most recent year for which official New Zealand crib statistics are available. The number of babies sleeping on wrapped mattresses is derived from three studies reporting the incidence of mattress-wrapping in New Zealand: NZ Med J. 2000; 113:8-10; NZ Med J. 2000;113:326-327; Eur J Pediatr. 2008; 167(2):251-252.
  2. New Zealand Ministry of Health: official cot death statistics 1994 to 2015 (inclusive). Data for 2014 and 2015 are progress counts.
  3. Sprott,T.J.; Cot Death -- Cause and Prevention Experiences in New Zealand 1995-2004 Journal of Nutritional & Environmental Medicine; 2004; 14(3): 221-232

  4. Kapuste, H., et al., Giftige Gase im Kinderbett (Toxic Gases in the Infants' Bed), Zeitschrift für Umweltmedizin 2002; 44: 18-22.