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Table 1 General characteristics of included studies

From: A systematic review of the psychosocial difficulties relevant to patients with migraine

 

Observational studies

Clinical trials

Total studies included (no. 51)

Cross-sectional studies (no. 9)

Longitudinal studies (no. 12)

Case–control studies (no. 2)

Controlled trials (no. 5)

Randomized trials (no. 23)

Total sample size

5,155

7,147

471

1,051

7,004

20,852

Mean ± SD

572.8 ± 841.1

595.6 ± 1,526.8

235.5 ± 191.6

210.2 ± 350.4

304.5 ± 358.1

401.0 ± 839.7

Min.–max.

28–2,245

20–5,471

100–371

20–835

12–1,506

12–5,471

Females (%)

82.2

80.7

84.7

86.1

77.5

80.2

Mean age (years)

41.1

41.2

36.9

39.6

39.9

40.6

Mean disease duration

13.6

12.1

18.9

–

18.2

13.0

Diagnosis

 Migraine with aura (%)

4

5.1

14

29.6

26.2

9.8

 Migraine without aura (%)

96

94.9

86

70.4

73.8

90.2

Overall quality (mean ± SD)

2.4 ± 0.5

2.4 ± 0.5

3 ± 0

2.4 ± 0.5

2.9 ± 0.7

2.7 ± 0.7

  1. Percentages, mean age, mean disease duration were calculated in reference to the number of patients enrolled for each study type