A formal test indicated a marginally statistically significant ( p = 0.03) interaction by sex when all three interactions terms for the smoking variables were included in the model as a block.
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Active and passive smoking and the risk of myocardial infarction in 24,968 men and women during 11 year of follow-up: the Tromsø Study.
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0.0300
The sentences
Formal test for interaction by sex for the three variables were not statistically significant or only borderline significant, however.