To track your mental health over time, take the same questionnaire on a regular schedule. Write down the date, your score, and anything unusual about that stretch. The PHQ-9 and GAD-7 ask about the past two weeks, so every two weeks is a good interval. Then look at the pattern across several results, not at any one score.
Why repeat the same questionnaire
Some changes in mood build slowly, and day to day they are hard to notice. "Normal" can drift without you realizing it.
When you track consistently, you can record:
- Whether your questionnaire total rose, fell, or stayed similar
- Which answers changed
- Events that may help explain a change
- Questions to bring to your doctor or therapist
Doctors and therapists may use repeated questionnaires as one part of measurement-based care. You can keep a similar record for yourself, but it does not replace a professional assessment.
What does a score change mean?
Not every score change has the same meaning. Your answers can vary with symptoms, timing, context, and ordinary measurement variation.
There is no universal point rule across mental health questionnaires. Interpret a change using guidance for that exact questionnaire, then compare it with your daily life and how you feel.
Record the change before interpreting it
If your PHQ-9 drops from 14 to 9, the total decreased by 5 points and crossed a symptom band. That is worth discussing. A 2004 study looked at 434 older adults treated for depression in the IMPACT trial. It estimated that the smallest PHQ-9 change that matters clinically is five points. Treat a change of that size as a reason to look closer, not as a universal rule. The number alone cannot show why it changed or whether treatment caused the change.
Score bands
The PHQ-9 and GAD-7 both group totals into published severity bands.
PHQ-9 (depression symptoms):
| Score | Severity |
|---|---|
| 0-4 | None-minimal |
| 5-9 | Mild |
| 10-14 | Moderate |
| 15-19 | Moderately severe |
| 20-27 | Severe |
GAD-7 (anxiety symptoms):
| Score | Severity |
|---|---|
| 0-4 | Minimal |
| 5-9 | Mild |
| 10-14 | Moderate |
| 15-21 | Severe |
These labels summarize how often you reported symptoms. They are not a diagnosis. Moving from "moderate" (12) to "mild" (7) changes the label. The total alone does not prove recovery or treatment success.
Response and remission need clinical context
Research studies may define response or remission using a specific questionnaire, population, and protocol. Those definitions are not interchangeable. A lower total does not prove that symptoms are gone or that a treatment caused the change.
How often to track
The PHQ-9 and GAD-7 ask about the past two weeks, so taking them every two weeks avoids overlapping answers. Other questionnaires cover different time spans, so match the schedule to the one you use. If you are in treatment, ask your provider what interval fits your care plan.
More frequent tracking is not always more informative. If you take a two-week questionnaire every week, each answer partly covers the same days as the last one.
How to track well
A consistent record is easier to read and easier to discuss.
Same assessment every time
A PHQ-9 total and a GAD-7 total measure different symptoms, so one cannot be compared with the other. Pick the questionnaire that fits what you want to follow and keep using it. If you track both, compare each one only with its own earlier results.
Same conditions
Take the assessment on the same day of the week and at a similar time of day when you can. That makes one result easier to compare with the next.
Record the date and context
Note anything unusual: bad sleep the night before, a stressful week at work, or a recent vacation. This context helps explain outliers later.
Look at trends, not single points
A high score after a bad week doesn't mean you're relapsing. A low score during a vacation doesn't mean you're cured. Look at several results before drawing conclusions.
A score is not a diagnosis. A questionnaire can show that your answers changed and roughly how much. Only a doctor or therapist can say what the change means.
Patterns to discuss
Patterns can guide questions. They cannot supply a diagnosis or explanation.
Lower scores over time
Scores gradually decline over weeks or months. This records fewer symptoms on that questionnaire. It does not establish why the answers changed.
Plateau
Scores stay in a similar range. That may prompt questions about:
- Whether the questionnaire still fits what you are trying to track
- Whether daily life and how you feel changed even when the total did not
- Whether timing, missing answers, or life events affected the comparison
A plateau does not mean a treatment has reached its limit. Only a review with your provider can inform a change in care.
Rising scores after a lower period
Scores rise after a period of lower totals. Review the answers and context, then bring the pattern to your provider if it persists or concerns you.
Seasonal pattern
Scores are higher during the same months in more than one year. That pattern may be useful to discuss, but it does not establish a seasonal cause.
Stress-related pattern
Scores rise around an identifiable stressor and later return to the earlier range. Record the context. The pattern cannot tell a short reaction to stress apart from a longer-lasting condition.
When to talk with someone
- Symptoms or daily functioning are getting worse
- A score pattern concerns you or does not match how you feel
- You answer above "not at all" on the PHQ-9 question about thoughts of death or self-harm
- You have questions about whether your current care plan still fits
Any of these is a reason to talk to a professional. If you are already in care, talk to the person treating you.
If you need help now. In the US, Call 988 or text 988. Call 911 if you are in immediate danger. Outside the US, contact your local emergency number or find support in your country.
Changes that need context
Do not read much into a small change, a single unusual week, or a total that stays above zero. Small changes may reflect ordinary variation. No fixed amount means the same thing on every questionnaire or for every person. A low or unchanged total never means that you should stop care you already receive.
What to record
A notebook or spreadsheet works. Record:
- Date
- Assessment used
- Total score
- Any section scores (if applicable)
- Brief context notes
If you use Survey Doctor, each result is saved with its date and shown on a chart over time. You can also set a reminder to retake the same questionnaire every two weeks.
Review your record every month or so. A chart can make trends easier to see than a list of numbers.
What the record can and cannot show
Questionnaires you answer yourself are not the mental health equivalent of blood pressure or blood sugar. They record your answers, not an objective biological measurement.
That record can still be useful. "My score dropped 8 points over three months" gives you something concrete. You can compare it with sleep, daily life, life events, and how you feel. Bring the pattern to your doctor or therapist, and decide together what it means.
Getting started
- Pick one questionnaire: the PHQ-9 for depression symptoms or the GAD-7 for anxiety symptoms. The guides to PHQ-9 scores and GAD-7 scores explain what each total means.
- Take it today. Record the date and score.
- Set a reminder for two weeks from now, or for the interval your provider suggests.
- After a few months, look back at the pattern and take it to your next appointment.