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SRQ-20 (Self-Reporting Questionnaire)

WHO questionnaire with 20 questions about the past 30 days, validated in São Paulo to screen for common mental disorders in primary care and occupational health.

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Check the population, units and version. The result shows the formula or classification; it does not make an automatic treatment decision.

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Method · Limits of application

SRQ-20/WHO; Brazilian Mari–Williams 1986:20 binary questions,0–20, cutoff≥8; item 17 alert

Screening for common mental disorders in primary care, followed by clinical assessment when indicated. The Brazilian study found performance differences by sex. A total does not replace a diagnostic interview; the recall window and cutoff must match the version and population studied.

Required fields: 0/20 completed

Complete all required fields. Optional fields are marked.

In the last 30 days… 1. Have you had frequent headaches? required

2. Do you have a poor appetite? required

3. Do you sleep poorly? required

4. Are you easily frightened? required

5. Do your hands shake? required

6. Do you feel nervous, tense or worried? required

7. Do you have poor digestion? required

8. Do you have difficulty thinking clearly? required

9. Have you felt sad recently? required

10. Have you been crying more than usual? required

11. Do you have difficulty performing your daily activities satisfactorily? required

12. Do you have difficulty making decisions? required

13. Do you have difficulties at work (is your work distressing or does it cause you suffering)? required

14. Are you unable to play a useful role in your life? required

15. Have you lost interest in things? required

16. Do you feel that you are useless or of no worth? required

17. Have you had thoughts of ending your life? required

18. Do you feel tired all the time? required

19. Do you have unpleasant sensations in your stomach? required

20. Do you tire easily? required

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Conditions of use

Check the population, units, inclusion and exclusion criteria, and version in the original source. A result alone does not establish a diagnosis, discharge decision or prescription.

Documented parameters

In the last 30 days… 1. Have you had frequent headaches?
2. Do you have a poor appetite?
3. Do you sleep poorly?
4. Are you easily frightened?
5. Do your hands shake?
6. Do you feel nervous, tense or worried?
7. Do you have poor digestion?
8. Do you have difficulty thinking clearly?
9. Have you felt sad recently?
10. Have you been crying more than usual?
11. Do you have difficulty performing your daily activities satisfactorily?
12. Do you have difficulty making decisions?
13. Do you have difficulties at work (is your work distressing or does it cause you suffering)?
14. Are you unable to play a useful role in your life?
15. Have you lost interest in things?
16. Do you feel that you are useless or of no worth?
17. Have you had thoughts of ending your life?
18. Do you feel tired all the time?
19. Do you have unpleasant sensations in your stomach?
20. Do you tire easily?

3/3 reference cases checked. Numerical tests are not clinical validation.

Sources and documentation

Documented formula

Transcribed from the source or a recorded revision; this is not a clinical recommendation.

One point for each “yes” (select affirmative answers). Total: 0–20. Brazilian validation cutoff (Mari, Williams 1986): ≥ 8 = suspected common mental disorder.

“yes” on item 17 requires suicide-risk assessment regardless of total.

References

Mari JJ, Williams P. A validity study of a psychiatric screening questionnaire (SRQ-20) in primary care in the city of Sao Paulo. Br J Psychiatry, 1986.

Identifier: srq-20

Original clinical content: Brazilian Portuguese.

Method version

SRQ-20/WHO; Brazilian Mari–Williams 1986:20 binary questions,0–20, cutoff≥8; item 17 alert

srq-20@native-2026-10-03+faabf44b47e9

Source for the active edition

The bibliographic edition identifies the source. By itself, it proves neither full conformity of the formula nor clinical approval.

Synthetic cases checked (3)

Synthetic cases for checking the implementation, with no patient data.

Case 1

reference-001

Inputs

In the last 30 days…1. Have you had frequent headaches?: Yes
3. Do you sleep poorly?: Yes
6. Do you feel nervous, tense or worried?: Yes
7. Do you have poor digestion?: Yes
18. Do you feel tired all the time?: Yes
2. Do you have a poor appetite?: No
4. Are you easily frightened?: No
5. Do your hands shake?: No
8. Do you have difficulty thinking clearly?: No
9. Have you felt sad recently?: No
10. Have you been crying more than usual?: No
11. Do you have difficulty performing your daily activities satisfactorily?: No
12. Do you have difficulty making decisions?: No
13. Do you have difficulties at work (is your work distressing or does it cause you suffering)?: No
14. Are you unable to play a useful role in your life?: No
15. Have you lost interest in things?: No
16. Do you feel that you are useless or of no worth?: No
17. Have you had thoughts of ending your life?: No
19. Do you have unpleasant sensations in your stomach?: No
20. Do you tire easily?: No

{
  "q1": true,
  "q3": true,
  "q6": true,
  "q7": true,
  "q18": true,
  "q2": false,
  "q4": false,
  "q5": false,
  "q8": false,
  "q9": false,
  "q10": false,
  "q11": false,
  "q12": false,
  "q13": false,
  "q14": false,
  "q15": false,
  "q16": false,
  "q17": false,
  "q19": false,
  "q20": false
}

Expected result

{
  "score": 5,
  "item17": 0
}

Actual result

{
  "score": 5,
  "item17": 0
}

Case 2

reference-002

Inputs

In the last 30 days…1. Have you had frequent headaches?: Yes
3. Do you sleep poorly?: Yes
6. Do you feel nervous, tense or worried?: Yes
9. Have you felt sad recently?: Yes
10. Have you been crying more than usual?: Yes
12. Do you have difficulty making decisions?: Yes
15. Have you lost interest in things?: Yes
18. Do you feel tired all the time?: Yes
2. Do you have a poor appetite?: No
4. Are you easily frightened?: No
5. Do your hands shake?: No
7. Do you have poor digestion?: No
8. Do you have difficulty thinking clearly?: No
11. Do you have difficulty performing your daily activities satisfactorily?: No
13. Do you have difficulties at work (is your work distressing or does it cause you suffering)?: No
14. Are you unable to play a useful role in your life?: No
16. Do you feel that you are useless or of no worth?: No
17. Have you had thoughts of ending your life?: No
19. Do you have unpleasant sensations in your stomach?: No
20. Do you tire easily?: No

{
  "q1": true,
  "q3": true,
  "q6": true,
  "q9": true,
  "q10": true,
  "q12": true,
  "q15": true,
  "q18": true,
  "q2": false,
  "q4": false,
  "q5": false,
  "q7": false,
  "q8": false,
  "q11": false,
  "q13": false,
  "q14": false,
  "q16": false,
  "q17": false,
  "q19": false,
  "q20": false
}

Expected result

{
  "score": 8
}

Actual result

{
  "score": 8,
  "item17": 0
}

Case 3

reference-003

Inputs

9. Have you felt sad recently?: Yes
15. Have you lost interest in things?: Yes
17. Have you had thoughts of ending your life?: Yes
In the last 30 days…1. Have you had frequent headaches?: No
2. Do you have a poor appetite?: No
3. Do you sleep poorly?: No
4. Are you easily frightened?: No
5. Do your hands shake?: No
6. Do you feel nervous, tense or worried?: No
7. Do you have poor digestion?: No
8. Do you have difficulty thinking clearly?: No
10. Have you been crying more than usual?: No
11. Do you have difficulty performing your daily activities satisfactorily?: No
12. Do you have difficulty making decisions?: No
13. Do you have difficulties at work (is your work distressing or does it cause you suffering)?: No
14. Are you unable to play a useful role in your life?: No
16. Do you feel that you are useless or of no worth?: No
18. Do you feel tired all the time?: No
19. Do you have unpleasant sensations in your stomach?: No
20. Do you tire easily?: No

{
  "q9": true,
  "q15": true,
  "q17": true,
  "q1": false,
  "q2": false,
  "q3": false,
  "q4": false,
  "q5": false,
  "q6": false,
  "q7": false,
  "q8": false,
  "q10": false,
  "q11": false,
  "q12": false,
  "q13": false,
  "q14": false,
  "q16": false,
  "q18": false,
  "q19": false,
  "q20": false
}

Expected result

{
  "score": 3,
  "item17": 1
}

Actual result

{
  "score": 3,
  "item17": 1
}

Code and reproducibility

This tool’s code on GitHub

Download code and tests

Sources, version and reproduction instructions

The code tests are technical checks. Clinical approval and professional translation review are recorded separately.

Relationship with cancer research

General context — relationship to be defined

A resource for general clinical contexts. This edition does not assign a specific oncological relationship; selecting it for a study requires a justified question, population and purpose.