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Table 2 Significance of the difference between mean excess CVD mortality associated with cold spells and on the other days in November-March excluding epidemics, for the same age groups and lags as in Table 1.

From: Excess cardiovascular mortality associated with cold spells in the Czech Republic

Population group

Mean excess CVD mortality associated with cold spell days

[deaths/day]

Mean excess CVD mortality on other days in winter (Nov.-March)

[deaths/day]

p value of the t-test for the difference in means

All ages, M

5.4

-0.2

< 0.001

All ages, F

6.5

-0.2

< 0.001

25–59 yrs, M

1.7

0.0

< 0.001

25–59 yrs, F

0.3

0.0

0.178

60–69 yrs, M

0.7

-0.1

0.083

60–69 yrs, F

0.8

-0.1

0.009

70–79 yrs, M

1.9

0.1

0.001

70–79 yrs, F

2.3

0.2

< 0.001

80+ yrs, M

2.2

-0.2

< 0.001

80+ yrs, F

4.2

-0.3

< 0.001

  1. Two sample t-test was used for testing the difference in means.