Depression Screening Score (PHQ-Simplified) Formula
Understand the math behind the depression screening score (phq-simplified). Each variable explained with a worked example.
Formulas Used
Depression Score
total_score = interest + down + sleep_trouble + tired + concentrationMax Possible Score
severity_max = 15Variables
| Variable | Description | Default |
|---|---|---|
interest | Little interest or pleasure in things (0-3) | 1 |
down | Feeling down, depressed, or hopeless (0-3) | 1 |
sleep_trouble | Trouble sleeping or sleeping too much (0-3) | 1 |
tired | Feeling tired or having little energy (0-3) | 1 |
concentration | Trouble concentrating (0-3) | 0 |
How It Works
Depression Screening
This simplified tool is inspired by validated depression questionnaires. It is NOT a diagnostic tool.
Scoring Guide
Important
If you are experiencing thoughts of self-harm or suicide, please contact the 988 Suicide and Crisis Lifeline by calling or texting 988. You are not alone.
Worked Example
Rating each symptom over the past two weeks.
- 01Interest = 1, Down = 1, Sleep = 1
- 02Tired = 1, Concentration = 0
- 03Total = 4 (Minimal depression)
Frequently Asked Questions
Is this a diagnosis?
No. This screening is for awareness purposes only. Depression must be diagnosed by a qualified healthcare professional.
When should I seek help?
If your score is 10 or higher, or if you are experiencing any thoughts of self-harm, please reach out to a healthcare provider or call 988 for immediate help.
What treatments exist for depression?
Therapy (especially CBT), medications, exercise, social support, and lifestyle changes are all effective treatments. Most people improve significantly with appropriate treatment.
Ready to run the numbers?
Open Depression Screening Score (PHQ-Simplified)