Table 2:

Association of number of days of consecutive snowfall with myocardial infarction among men and women

VariableHospital admissionDeath
No. of MIsOR (95% CI)No. of MIsOR (95% CI)
Men
No. of days with ≥ 5 cm of snow
 066 0321.00 (ref)32 1221.00 (ref)
 1*10 8201.06 (1.03–1.08)56841.14 (1.10–1.18)
 2 or 3 consecutive22981.09 (1.04–1.14)13001.20 (1.12–1.28)
No. days of snowfall lasting ≥ 6 h†
 035 4141.00 (ref)14 1701.00 (ref)
 1*13 6771.01 (0.98–1.03)60771.05 (1.02–1.09)
 2 or 3 consecutive13 6011.05 (1.03–1.08)65591.13 (1.09–1.17)
Women
No. days with ≥ 5 cm of snow
 041 4141.00 (ref)24 4271.00 (ref)
 1*61850.98 (0.95–1.01)38081.02 (0.98–1.06)
 2 or 3 consecutive13240.98 (0.92–1.04)8141.08 (0.99–1.17)
No. days of snowfall lasting ≥ 6 h†
 022 4341.00 (ref)11 8821.00 (ref)
 1*84811.01 (0.98–1.04)46540.98 (0.94–1.02)
 2 or 3 consecutive80681.00 (0.97–1.03)46230.98 (0.94–1.03)

  • Note: CI = confidence interval, MI = myocardial infarction, OR = odds ratio, ref = reference category.

  • ↵* Snow the day of or the day before myocardial infarction.

  • ↵† Excludes MI events with missing data on duration of snowfall.