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What is an adequate length of baseline in research and clinical practice with chronic headache?
E B Blanchard1, J Hillhouse, K A Appelbaum
1Center for Stress and Anxiety Disorders, State University of New York, Albany 12203.
Biofeedback and Self-Regulation
|December 1, 1987
Abstract:
We examined the representatives of baseline headache diary recording periods of 1, 2, 3, and 4 weeks for three kinds of headache disorder--tension, migraine, and combined migraine and tension. For research purposes at pretreatment, 2 weeks of diary recording are preferable for tension headache, while at least 3 weeks are preferred for migraine and combined headache. At follow-up, 1 week of diary recording appears adequate for all three headache types. Recommendations are also made for clinical practice.