patients diagnosed with MDD (according to the WHO's \[2019\] International Classification of Diseases and related health problems categorization of mental disorders) for MDD group.
You may not be if
diagnosis of other mental disorders during the past one-year period (for MDD group).
diagnosis of any mental disorders within the past one-year period, previous suicide attempt, or current suicide risk identified in the study (for control group).
diagnosis of somatic diseases that may affect changes in inflammatory factors in the body (for both groups)
