The present invention relates to a method and apparatus for calculating a residential depression index of an elderly person, the method comprising: generating a plurality of self-projection images and a questionnaire for diagnosing residential depression inquiring depression corresponding to each of the self-projection images; Providing the depression diagnosis questionnaire to a user terminal, and receiving a user response transmitted by the user terminal in response to the depression questionnaire; Calculating a sum of user answers by converting and then depressing depression corresponding to each of the self-projection images included in the user answer in a score method; And calculating and notifying the elderly residential depression index according to the formula "sum of user answers-(age-65) * age weight".
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