Table 3.

The Effect of Sleeping Position Placed to Sleep the Last Time in SIDS, Stratified by Each Matching Variable, Country, Year of Birth, and Gender, and by Infant's Age

Matching VariableSIDS (%)Controls (%)Sleeping Position
ProneSideSupine
OR95% CIOR95% CIReference
Country
 Denmark55 (22.5)170 (19.6)37.38.4 –1653.31.1 –111
 Norway72 (29.5)269 (31.0)15.15.9 –382.21.0 –4.71
 Sweden117 (48.0)430 (49.5)14.46.4 –337.13.0 –171
Year of birth
 1991–92107 (43.9)360 (41.4)11.85.2 –272.71.2 –6.11
 199379 (32.4)272 (31.3)12.04.5 –324.01.6 –101
 1994–9558 (23.8)237 (27.3)14.65.4 –403.71.5 –9.21
Gender
 Boys159 (65.2)562 (64.7)10.35.5 –193.41.8 –6.51
 Girls85 (34.8)306 (35.3)30.411 –884.31.8 –101
Infant's age (wk)
 1–12120 (49.6)233 (27.2)6.72.5 –182.30.85 –6.11
 13–2477 (31.8)353 (41.1)28.57.9 –1075.91.6 –221
 25+45 (18.6)272 (31.7)4.71.7 –131.70.71 –4.21