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The General Health Questionnaire allows for distinguishing patients suffering from psychiatric problems from those in good mental health. There is some controversy as to the best scoring method. Two different methods have been proposed: GHQ and cGHQ. The present study aims at verifying whether there is confirmation of the hypothesis that the population resulting from the cGHQ calculation presents greater chronicity. Two discordant groups of patients were identified: Group 1 (acute cases only), positive on the GHQ, but negative on the cGHQ (n=124), and Group 2 (chronic cases only), negative on the GHQ and positive on the cGHQ (n=64). Patients in Group 2 were older (p<0.001),were more worried about their health (p=0.06) and their health problem had lasted for a longer time (p=0.02). Patients in Group 2 were twice as likely to remain positive on the GHQ and/or the cGHQ as those in Group 1 in the 1- and 3-month follow-ups. The results suggest the presence of notable differences between the two groups, generally explainable by the hypothesis of greater chronicity in the cGHQ patients. The results confirm the impact of the choice of calculation method on the composition of the two groups. Finally, the authors suggest using the two calculation methods simultaneously. [ABSTRACT FROM AUTHOR]