Table 3

 Percentage of coronary events in the coldest 25% of periods* and adjusted odds ratios by sex, age, and fatal event

VariableCategoryTotal number of events% Of cold period events†Adjusted OR‡
Estimate95% CIOR95% PI
OR, odds ratio; PI, posterior interval; CI, confidence interval. *Temperature averaged over the current day and the preceding three days. †Expected value under no increased risk in cold periods = 25%. ‡Adjusted by age, sex, and fatal event using hierarchical logistic regression. §Reference category.
SexFemale1688327.426.8, 28.11.071.03, 1.11
Male§7052726.125.8, 26.41.00
Age group35–39256625.724.0, 27.40.990.90, 1.09
40–44545525.624.4, 26.70.970.91, 1.04
45–49946925.925.1, 26.80.990.94, 1.05
50–541505726.325.6, 27.01.010.96, 1.06
55–592282526.626.0, 27.21.020.98, 1.06
60–64§3203826.526.0, 27.01.00
Fatal eventYes3895327.226.8, 27.61.071.04, 1.10
No§4845725.725.3, 26.01.00
Total8741026.326.0, 26.6