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Table 3 The 25(OH)D concentration according seasonal propensity and sample seasons in 22 CH patients with recurrence

From: Vitamin D deficiency in patients with cluster headache: a preliminary study

According to sample seasons

Seasonal propensity

No seasonal propensity (n = 8)

p-value

Winter to spring (n = 7)

Summer to autumn (n = 7)

Winter to spring (n = 12)

12.28 ± 1.93a (n = 5)

13.00 ± 3.39c (n = 2)

9.48 ± 1.61e (n = 5)

0.001

Summer to autumn (n = 10)

12.35 ± 0.07b (n = 2)

18.54 ± 4.38d (n = 5)

16.97 ± 1.82f (n = 3)

 
  1. One-way analysis of variance (ANOVA) was done based on normal distribution of vitamin D level among 28 patients with cluster headache. According to post-hoc analysis between 6 groups using Turkey HSD, p-values between a and d was 0.023, p-value between d and e was < 0.001, and p-value between e and f was 0.018. The other comparisons were not significant
  2. CH cluster headache