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Table 1 Baseline characteristics of triptan users overall and according to 5-HTTLPR polymorphism

From: Bi-allelic and tri-allelic 5-HTTLPR polymorphisms and triptan non-response in cluster headache

 

All triptan users (n = 148)

Bi-allelic 5-HTTLPR polymorphism

p-value†

Functional tri-allelic 5-HTTLPR polymorphism

p-value†

 

LL (n = 44)

LS (n = 70)

SS (n = 34)

L*L* (n = 37)

L*S* (n = 70)

S*S* (n = 41)

Age (mean ± SD), years

44.6 ± 10.5

45.5 ± 12.0

43.9 ± 9.7

44.9 ± 10.3

0.82

45.5 ± 12.0

44.5 ± 10.1

44.0 ± 10.0

0.82

Men (%)

115 (77.7)

35 (79.6)

53 (75.7)

27 (79.4)

0.86

29 (78.4)

55 (78.6)

31 (75.6)

0.93

CH form,%

         

Episodic

103 (69.6)

27 (61.4)

52 (74.3)

24 (70.6)

0.47

22 (59.5)

50 (71.4)

31 (75.6)

0.28

Chronic

28 (18.9)

10 (22.7)

13 (18.6)

5 (14.7)

 

8 (21.6)

15 (21.4)

5 (12.2)

 

Undetermined periodicity

17 (11.5)

7 (15.9)

5 (7.1)

5 (14.7)

 

7 (18.9)

5 (7.1)

5 (12.2)

 
  1. 5-HTTLPR, 5-hydroxytryptamine (=serotonin) transporter linked polymorphic region; CH, cluster headache.
  2. †p-value from chi-square test for categorical variables and from Kruskal Wallis test for linear variables.