Table 3 Changes in number of headache days, and migraine disability scores before and after supplementation with vitamin D or placebo in episodic migraine patients with/without aura

 Baseline

10.58 (3.67) ^a,b

7.75 (3.86)

6.81 (2.43) ^a

7.67 (3.29) ^b

0.008

 After the trial

6.00 (3.45)

7.50 (3.32)

4.63 (2.40) ^a

7.17 (4.11) ^a

0.029

 Changes

−4.58 (3.76) ^a,b

−0.25 (3.05) ^a

−2.09 (2.27)

− 0.10 (2.91) ^b

0.000

P value^#

0.001

0.801

< 0.001

0.868

 Baseline

40.00 (26.38)

37.90 (18.53)

24.81 (10.80)

36.53 (22.75)

0.057

 After the trial

23.08 (24.42)

42.90 (25.15) ^a

17.59 (10.94) ^a.b

32.46 (16.44) ^b

0.001

 Changes

−16.92 (15.39) ^a,b

5.00 (20.18) ^a

−7.22 (9.25)

−1.46 (12.20) ^b

0.001

P value^#

0.002

0.453

< 0.001

0.547