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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