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Table 4 Pressure indicator values and comparison of results.

From: Is there a relationship between weather conditions and aortic dissection?

Indicator A

Mean of A (millibars) n = 26

Indicator B

Mean of B (millibars) n = 26

Indicator A vs. Indicator B

p-value

    

Paired t-test (t-value)

Wilcoxon signed rank test (z-value)

 

Mean pressure for whole month

1011.32

Mean pressure 48 hours before

1009.39

N/A

0.724

0.469

Mean pressure for whole month

1011.32

Mean pressure 24 hours before

1009.88

N/A

0.444

0.657

Pressure range for the whole month

6.99

Pressure range 48 hours before

8.51

N/A

-1.943

0.052

Pressure range for whole month

6.99

Pressure range 24 hours before

8.40

-1.9275

N/A

0.065

Standard deviation of pressure for whole month

2.22

Standard deviation of pressure 48 hours before

2.73

N/A

-2.283

0.022

Standard deviation of pressure for whole month

2.22

Standard deviation of pressure 24 hours before

2.64

N/A

-1.905

0.057