Table 2: Prevalence of different features of migraine in patients and vitamin D status as sufficient level (more than 20 ng/mL) and deficient level (less than 10 ng/mL) in each category.

Item (Case)Vitamin D level (ng/mL) value
Less than 10More than 20

Frequency of headache per month
 ≤1541 (78.8%)17 (81.0%)0.840
 >1511 (21.2%)4 (19.0%)
Nausea
 Yes40 (76.9%)14 (66.7%)0.366
 No12 (23.1%)7 (33.3%)
Family history
 Positive38 (73.1%)14 (66.7%)0.584
 Negative14 (26.9%)7 (33.3%)
Menstrual effect
 Yes22 (45.8%)11 (73.3%)0.063
 No26 (54.2%)4 (26.7%)
Intensity of pain
 Mild0 (0.0%)0 (0.0%)0.109
 Moderate13 (25.0%)5 (23.8%)
 Intense 26 (50.0%)15 (71.4%)
 Very Intense13 (25.0%)1 (4.8%)
Level of nausea
 None12 (23.1%)7 (33.3%)0.148
 Mild25 (48.1%)4 (19.0%)
 Intense8 (15.4%)5 (23.8%)
 Vomiting7 (13.5%)5 (23.8%)
Level of disability
 None5 (9.6%)2 (9.5%)0.395
 Mild24 (46.2%)10 (47.6%)
 Marked10 (19.2%)1 (4.8%)
 Confined to bed13 (25.0%)8 (38.1%)
Level of tolerability
 Tolerable11 (21.2%)4 (19.0%)0.946
 Barely tolerable28 (53.8%)11 (52.4%)
 Intolerable13 (25.0%)6 (28.6%)
MIGSEV total
 Low6 (11.6%)4 (19.0%)0.686
 Intermediate23 (44.2%)8 (38.1%)
 High23 (44.2%)9 (42.9%)
Duration of headache
 4–12 h24 (46.2%)12 (57.1%)0.695
 12–24 h16 (30.8%)5 (23.8%)
 24–72 h12 (23.1%)4 (19.0%)