TABLE 1

Study Population Characteristics

CharacteristicTotalDeaths on SofasOther Sleep-Related Infant DeathsP
N%N%N%
Total7934100.01024100.06910100.0
Age (mo)
 <187511.013713.473810.7<.05
 1162720.524123.5138620.1
 2170521.522421.9148121.4
 3127816.113613.3114216.5
 488211.110410.177811.3
 55687.2615.95077.3
 63684.6373.63314.8
 72553.2343.42213.2
 81471.9202.01271.8
 9921.2131.3791.1
 10771.090.9681.0
 11600.870.7530.8
Gender
 Male462258.360959.5401358.1NS
 Female329541.541240.2288341.7
 Unknown170.220.2150.2
 Missing data260.3
Race or ethnicity
 Hispanic153619.414113.8139520.2<.001
 Non-Hispanic white355744.850249.0305644.2
 Non-Hispanic black240130.333532.7206729.9
 Other race4395.5464.53935.7
 Missing data3023.8
Place of incident
 Child’s home749494.598696.3650894.2<.05
 Other2653.3191.82473.6
 Unknown1752.2201.91552.2
 Missing data142017.9
Autopsy performed
 Yes776997.999697.3677398.0NS
 No720.9111.1610.9
 Unknown931.2171.7761.1
 Missing data1852.4
Diagnosis
 SIDS or sudden unexpected infant death273534.524624.0248936.0<.001
 ASSB213927.041040.0172925.0
 Ill-defined306038.636936.0269138.9
  • NS, not significant.