Table 3 Symptom burden and impaired participation from headache yesterday

Duration (hours)

 Mean ± SEM, median

8.3 ±  + .4, 2.0

7.9 ± 0.7, 2.0

8.5 ± 0.6, 2.0

F(1, 472) = 0.4, p = 0.54

Intensity

 Not bad (n)

3

102

3

X²(2, N = 478) = 1.9, p = 0.38

 Quite bad (n)

302

63

200

 Very bad (n)

173

165

110

 Mean^a

2.4

2.4

2.3

What done

 Everything (n)

147

50

97

X²(3, 473) = 1.0, p = 0.80

 More than half (n)

108

37

71

 Less than half (n)

109

41

68

 Nothing (n)

109

34

75