Table 3.

Results of the multivariate logistic regression model for predictors of acute myocardial infarction

Variable	OR	95% CI	p Value
Evidence of recent influenza infection*	1.07	0.53 to 2.19	0.849
Age†	0.96	0.94 to 0.97	<0.001
Sex (Male)	3.83	2.54 to 5.78	<0.001
Self-reported high cholesterol	2.00	1.35 to 2.97	0.001
Current smoker	2.11	1.25 to 3.56	0.005
Influenza vaccine in study year‡	0.55	0.35 to 0.85	0.008

*Any evidence of influenza is either a fourfold rise in titre between baseline and convalescent sera or a baseline titre of ≥64 in an unvaccinated, GP-verified individual.

†Age as a continuous variable.

‡Vaccination status validated by GP records.

GP, general practitioner.