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Table 2 Results of the spectral analysis testing the seasonality of atrial fibrillation hospitalizations by age and gender between the years 1988 and 2001

From: Is there a clinically significant seasonal component to hospital admissions for atrial fibrillation?

 

Male

Female

Both genders

Age group

FK†

BKS‡

FK

BKS

FK

BKS

40–49

5.48

0.08

6.83*

0.12

4.82

0.12

50–59

5.77

0.18*

4.46

0.09

7.77**

0.24***

60–69

5.34

0.18*

5.97

0.08

6.52*

0.22**

70–79

4.53

0.08

7.65**

0.12

9.35**

0.18*

80+

4.69

0.16*

6.64*

0.20**

9.17**

0.23***

All ages

5.68

0.19**

9.20**

0.16*

11.32**

0.28***

  1. † FK (Fisher Kappa Test) tests the null hypothesis that the series is Gaussian white noise against the alternative hypothesis that the series contains an added deterministic periodic component of unspecified frequency. ‡ BKS (Bartelette's Kolmogorov-Smirnov Test) tests the null hypothesis that the series is white noise. * p < 0.05, ** p < 0.01, ***p < 0.001