How many different symptom combinations fulfil the diagnostic criteria for major depressive disorder? Results from the CRESCEND study
Sammanfattning
Background: The polythetic nature of major depressive disorder (MDD) in DSM- IV and DSM-5 inevitably
leads to diagnostic heterogeneity.
Aims: This study aimed to identify the number of depressive symptom combinations actually fulfilling
the DSM-IV diagnostic criteria that can be found in Korean MDD patients and the relative frequencies
of each combination.
Methods: Using the data from the Clinical Research Center for Depression (CRESCEND) study in South
Korea, we enrolled 853 MDD patients diagnosed using DSM-IV and scored as 8 or more on the
Hamilton Depression Rating Scale (HAMD). Descriptive statistical analyses were performed to reveal the
degree of diagnostic heterogeneity of the MDD.
Results: This study identified 119 different depressive symptom combinations. The most common
combination consisted of all nine depressive symptom profiles, and nine different combinations were
each present in more than 3% of the patients.
Conclusion: The findings support the criticism that the diagnosis of MDD is not based on a single
mental process, but on a set of ‘family resemblances’.