McGrath 1992.
| Study characteristics | ||
| Methods | RCT. 3 arms. Assessed at pretreatment, post‐treatment, 3 months, and 1‐year follow‐up | |
| Participants | End of treatment: n = 74 Start of treatment: n = 87 Sex: 63 F, 24 M Mean age = not given: range 11 to 18 years Source = paediatricians and family physicians Diagnosis = migraine Mean years of pain not given: minimum 3 months |
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| Interventions | "Therapist administered cognitive behavioural/stress coping/relaxation training" "Self‐administered cognitive behavioural/stress coping/relaxation training" "Information and support" |
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| Outcomes | Primary pain outcome: headache diary Primary disability outcome: none Primary depression outcome: Poznanski Depression Scale Primary anxiety outcome: none
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| Notes | COI: not reported Funding: "This research was funded by the National Health and Welfare Research and DeveIopment Program of Canada. Dr. McGrath was supported by a Career Scientist Award of the Ontario Ministry of Health." |
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| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Random sequence generation (selection bias) | Unclear risk | "Randomised to 1 of the 8‐week treatments" Comment: probably done, no method described |
| Allocation concealment (selection bias) | Unclear risk | No description found in text Comment: probably not done |
| Blinding of outcome assessment (detection bias) All outcomes | Unclear risk | No description found in text Comment: probably not done |
| Incomplete outcome data (attrition bias) All outcomes | Unclear risk | Attrition was described, however significant differences between completers and non‐completers were not reported |
| Selective reporting (reporting bias) | High risk | Data were incompletely reported |