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Table 2 Characteristics of Study Population based on Headache Phenotype Diagnosis following Diary Review

From: Interrelations between migraine-like headache and persistent post-traumatic headache attributed to mild traumatic brain injury: a prospective diary study

Variable Chronic Migraine-Like (n = 47) Episodic Migraine-Like combined with TTH-Like (n = 9) Chronic TTH-Like (n = 8)
Age, mean (SD), y 34.5 (12.0) 34.3 (7.9) 31.5 (8.0)
Male/Female, % 19/81 33/67 37/63
Body Mass Index, mean (SD), kg/m2 26.1 (5.6) 24.6 (3.8) 24.9 (4.0)
Current Employment Status, No. of subjects (%)
 Full-time employed 10 (21) 2 (22) 2 (25)
 Part-time employed 25 (53) 4 (44) 5 (63)
 Unemployed 11 (23) 2 (22) 1 (13)
 Retired 1 (2) 1 (11) 0 (0)
Education
 Years of education, mean (SD), y 14.3 (2.6) 16.3 (3.2) 15.9 (3.3)
Level of education, No. of subjects (%)
 Secondary school or high school 10 (21) 0 (0) 1 (13)
 Skilled labor 13 (28) 4 (44) 1 (13)
 Bachelor’s degree 11 (23) 3 (33) 3 (38)
 Higher education 13 (28) 2 (22) 3 (38)
Injury Cause, No. of subjects, %
 Fall 12 (26) 3 (33) 3 (38)
 Motor vehicle collision 14 (30) 2 (22) 1 (13)
 Sports-related injury 11 (23) 1 (11) 1 (13)
 Violence/assault 1 (2) 1 (11) 1 (13)
 Other unintentional injury 9 (19) 2 (22) 2 (25)
Months with Headache attributed to Mild TBI, mean (SD), months 55.0 (55.1) 89.0 (73.4) 70.0 (58.0)
Family History of Migraine, No. of subjects (%) 15 (32) 4 (44) 3 (38)
Headache Frequency, mean (SD)
 Monthly headache days of any intensity 26.6 (2.4) 24.6 (3.8) 26.6 (3.6)
 Monthly headache days of moderate to severe intensity 19.9 (6.5) 17.7 (7.0) 20.3 (5.9)
Migraine-Like Frequency, mean (SD)
Monthly migraine-like days 22.5 (6.8) 3.6 (1.9)
 Monthly definite migraine-like days 17.6 (8.4) 3.0 (2.1)
 Monthly probable migraine-like days 4.8 (6.1) 0.6 (1.1)
TTH-Like Frequency, mean (SD)
 Monthly TTH-like days 4.1 (6.3) 21.0 (4.6) 26.6 (3.6)
Acute Medication Use
Current Acute Medication Use, No. of subjects (%) 44 (94) 7 (78) 7 (88)
Triptans
 Current or previous use, No. of subjects 24 5 1
 Lack of efficacy in those with history of acute medication use, No. of subjects (%) 13 (54) 3 (60) 1 (100)
Prevention Medication Use
History of Preventive Medication Use, No. of subjects (%) 36 (77) 7 (78) 6 (75)
 No drug failures, No. of subjects (%) 4 (11) 2 (29) 1 (17)
 Failure of ≥2 drugs, No. of subjects (%) 20 (56) 5 (71) 2 (33)
Preventive Treatment Naïve, No. of subjects 11 (23) 2 (22) 2 (25)
Current Preventive Medication Use, No. of subjects (%) 20 (43) 5 (56) 4 (50)