Table 2

Consistency between recalled headache intensity and momentary headache intensity for the two subgroups of patients with tension-type headache


low SD group
high SD group



Mean (SD)
ICC (A, 1) (95% C.I.)
Mean (SD)
ICC (A, 1) (95% C.I.)

Recalled headache intensity and
54.7 (22.5)

59.5 (17.8)

mean headache intensity of all recordings
41.3 (23.2)*
0.75 (0.04, 0.93)
33.5 (16.8)*
0.21 (-0.11, 0.56)
mean headache intensity of scheduled recordings only
41.1 (22.4)*
0.75 (0.00, 0.93)
29.2 (16.2)*
0.16 (-0.09, 0.48)
mean headache intensity of event-contingent recordings only
60.3 (23.0)
0.81 (0.41, 0.95)
66.8 (12.2)
0.21 (-0.22, 0.60)
mean headache intensity of recordings when headaches were present
44.7 (19.0)*
0.77 (0.24, 0.92)
40.5 (13.0)*
0.29 (-0.11, 0.65)
maximal headache intensity of all recordings
71.5 (19.0)*
0.64 (-0.08, 0.89)
83.0 (11.7)*
0.23 (-0.10, 0.59)

ICC (A, 1), intraclass correlation coefficient of absolute agreement; SD, standard deviation; C.I., confidence interval.

* P < 0.001, vs. recalled headache intensity.

Recalled headache intensity was compared with some indices of momentary headache intensity.

High SD group is a group of patients whose headache intensity was highly variable.

Yoshiuchi et al. BioPsychoSocial Medicine 2008 2:13   doi:10.1186/1751-0759-2-13

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