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As part of a survey of 1011 men aged 20-60 years, a factor analysis and validation study of the General Health Questionnaire (GHQ) was carried out. Three clinically relevant factors could be isolated but factor analysis did not generally enhance the value of the GHQ. When compared with results for a similar group of women, sex differences in answering the GHQ were found; the GHQ was perhaps a less satisfactory screening instrument in the men.
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Hobbs et al. (1984) studied this question.
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