None listed
Conditions
Interventions
None listed
Sponsors
Yonsei University
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: Participants who agreed to the online informed consent and were screened for depressive severity. Individuals were assigned to a depressive-severity group when their PHQ-9 score exceeded the cutoff for that group, prior to the target number for the group being reached, following a first-come, first-served allocation procedure.
Exclusion criteria
Exclusion criteria: Participants who completed the depression screening but could not be assigned to the appropriate severity group because the target number for that group had already been filled. Participants who, at any point after providing informed consent, wish to discontinue their participation in the study.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Performance of depression-state classification algorithms (Accuracy, AUC, F1-score) | — |
Secondary
| Measure | Time frame |
|---|---|
| Differences in smartphone behavioral patterns (e.g., mobility, screen-use duration, communication frequency) across PHQ-9–defined depressive severity groups. | — |
Countries
Korea, Republic of
Contacts
Public ContactSeoi Lee
Yonsei University
Outcome results
None listed