In order to determine the generality of the Kudrow-Sutkus (1979) MMPI classification system for diagnosing headache type, a cross-validation analysis was performed on 99 headache subjects. Results indicated a high level of support for Kudrow-Sutkus' Group A (migraine and cluster) classification criteria (65.4% and 75.0% correct assignments for female and male subjects, respectively) but a low level of support for Kudrow-Sutkus' Group B (combined and chronic scalp muscle tension) classification criteria (5.9% and 25.2% correct assignments for female and male subjects, respectively). Possible reasons accounting for these differences are discussed.
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Andrasik et al. (1982) studied this question.