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Table 2 Subject characteristics

From: Measuring the impact of migraine for evaluating outcomes of preventive treatments for migraine headaches

  Overall
N = 32
Episodic migraine
N = 21
Chronic migraine
N = 11
Age (years), mean (SD) 40.3 (11.3) 39.7 (11.1) 41.5 (12.1)
Sex (female), n (%) 27 (84.4) 17 (81.0) 10 (90.1)
Ethnicity (not Hispanic or Latino), n (%) 28 (87.5) 17 (81.0) 11 (100)
Race, n (%)a
 White 26 (81.3) 17 (81.0) 9 (81.8)
 Black or African American 6 (18.8) 3 (14.3) 3 (27.3)
 American Indian or Alaska Native 2 (6.3) 1 (4.8) 1 (9.1)
 Other 1 (3.1) 0 (0) 1 (9.1)
Employment status, n (%)a
 Employed, full-time 19 (59.4) 15 (71.4) 4 (36.4)
 Employed, part-time 10 (31.3) 5 (23.8) 5 (45.5)
 Student 2 (6.3) 2 (9.5) 0 (0)
 Unemployed 1 (3.1) 0 (0) 1 (9.1)
 Other 1 (3.1) 0 (0) 1 (9.1)
Highest level of education, n (%)
 Secondary/high school 3 (9.4) 0 (0.0) 3 (27.3)
 Some college 14 (43.8) 10 (47.6) 4 (36.4)
 College degree 13 (40.6) 10 (47.6) 3 (27.3)
 Postgraduate degree 2 (6.3) 1 (4.8) 1 (9.1)
Migraine diagnosis duration (years), mean (SD) 14.3 (9.7) 12.2 (8.4) 18.5 (11.0)
Migraine interference with daily activities in past week, n (%)
 Not at all (0) 1 (3.1) 1 (4.8) 0 (0)
 Mildly (1–3) 5 (15.6) 2 (9.5) 3 (27.3)
 Moderately (4–6) 14 (43.8) 10 (47.6) 4 (36.4)
 Markedly (7–9) 9 (28.1) 6 (28.6) 3 (27.3)
 Extremely (10) 3 (9.4) 2 (9.5) 1 (9.1)
Did you miss work or school due to migraine related symptoms in the past week? n (%)
 Yes 9 (28.1) 7 (33.3) 2 (18.2)
 No 20 (62.5) 14 (66.7) 6 (54.6)
 I do not attend work or school 3 (9.4) 0 (0) 3 (27.3)
Treatments taken to treat migraines when they occur, n (%)a
 Over the counter/non-prescription medication 24 (75) 19 (90.5) 5 (45.6)
 Prescription drug 18 (56.3) 10 (47.6) 8 (72.7)
  1. aNot mutually exclusive