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. 2014 May 31;14:75. doi: 10.1186/1471-2415-14-75

Table 1.

Demographic results of the three groups

 
N
Average age
Migraine diagnosed (months)
Mean attack frequency
    Mean ± SD Mean ± SD per month
Group 1
45
34.6 ± 4.3
88.8 ± 12.5
3.6
Group 2
45
32.8 ± 4.9
85.3 ± 11.9
3.7
Control
30
31.8 ± 4.6
————————
————————
P   . p = 0.27 p = 0.53 p = 0.73

SD: Standard Deviation. p: Significance.