Table 1.

Distribution of Cases per Time Period

1992–1993*
n = 70
1994–1995
n = 58
1996–1997
n = 29
Usual prone sleepers (n = 93)
 Found prone (n = 87)423411
 Found nonprone (n = 6)222
None prone sleepers (n = 64)
 Found prone (n = 52)
  Inexperienced, placed prone (n = 34)15145
  Inexperienced, turned prone§ (n = 18)936
 Found nonprone (n = 12)255
  • * The year 1991 (which covers only the months of September through December) is included.

  • The year 1996 was the first year with a significant drop in SIDS rates in the province of Quebec. There were ∼50 cases per year before 1995 (rate of .5–.6/1000 live births); this drop to 27 cases in 1996 (a rate of .3/1000). By comparison, the Canadian data were .9/1000 in 1991 and .45/1000 in 1996. The campaign to avoid infant prone sleeping occurred between 1993 and 1994 in Canada and in the province of Quebec.

  • “Inexperienced, placed prone” refers to those infants who were always placed nonprone to sleep but were changed to prone only a short time before their death.

  • § “Inexperienced, turned prone” refers to those nonprone sleepers who were last placed nonprone but found dead in the prone position.