Table 1.

General Characteristics of the SIDS Study Population, Cleveland, 1992 to 1996

All
Non-SIDS
Infant
Deaths
SIDS
All SIDS
Deaths
All*
Nonbedsharing
All
Bedsharing
Bedsharing*
≥79.5 kg§<79.5 kg§
Number37884543014 12
Variable
Male infant (%) 5957595350 58
Black (%) 766856 (++)9079100
Married (%) 202532 (+) 1329 0
Smoked during pregnancy (%) 4061635743 75
Drank alcohol during pregnancy (%) 221717170 (+) 36
Use drugs during pregnancy (%) 191915270 (++) 50
Any substance use 292624300 (++) 58
Age-appropriate education
level (%)
7361675043 58
At least 1 previous infant
death (%)
910 71729 8
Previous history of SIDS (%)n/a 7 61321 0
Maternal pregravid weight
(kg) (SD)§
68.3 (19.0)73.0 (26.3)67.0 (19.5) (+)84.1 (33.1)108.7 (30.3) (+++)58.8 (8.8)
Mother's age (y) (SD)24.7 (6.3)23.9 (5.2)23.6 (5.1)24.4 (5.4)25.8 (3.9)24.0 (6.9)
Gravidity (SD)3.7 (2.5)3.6 (2.0)3.7 (2.1)3.4 (1.8)3.2 (1.8)3.6 (1.8)
Prenatal care visits (SD)4.0 (3.6)5.5 (3.8)6.1 (3.7) (+)4.4 (3.8)5.7 (3.5) (+)2.8 (3.6)
Gestational age (wk) (SD)28 (7.9)38 (3.2)37.8 (3.4)38.3 (2.8)39.2 (1.5)37.3 (3.5)
Infant's birth weight (g) (SD)1291 (1130)2869 (737)2836 (752)2929 (716)3176 (605) (+)2601 (811)
  • (+) P value < .05 (++) P value < .01 (+++) P value < .001

  • * Ten of 84 cases with unspecified bedsharing status were considered to be nonbedsharing.

  • § For 1 nonbedsharing and 1 bedsharing mother, weight was not recorded and 3 others were sleeping with someone other than the mother. Among the non-SIDS deaths, weight was not available on 57.

  • Completion of 12th grade or within 1 year of appropriate grade if <19 years old.