Psy-World
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Quick Inventory of Depressive Symptomatology
(QIDS)



Original reference: Rush et al. 2003
The16 item Quick Inventory of Depressive Symptomatology (QIDS) (Rush et al. 2003) (an abbreviated version of the 30 item Inventory of Depressive Symptomatology (IDS) is designed to assess the severity of depressive symptoms. It is available in a clinician-rated and and self-rated versions. The QIDS assesses all the criterion symptom domains designated by the American Psychiatry Association Diagnostic and Statistical Manual of Mental Disorders - 4th edition (DSM-IV) to diagnose a major depressive episode. These assessments can be used to screen for depression, although they have been used predominantly as measures of symptom severity. The seven day period prior to assessment is the usual time frame for assessing symptom severity.
The QIDS-SR16 covers only the nine diagnostic symptom domains used to characterize a major depressive episode, without items to assess atypical, melancholic or their commonly associated symptoms.
The QIDS is easy to administer in either the clinician-rated (QIDS-C16) or patient self report (QIDS-SR16) versions; they require minimal training. Both versions are sensitive to change, with medications, psychotherapy, or somatic treatments, making them useful for both research and clinical purposes. The psychometric properties of the QIDS, has been established in various study samples.

Further information available from the University of Pittsburgh Epidemiology Data Center IDS & QIDS web page


Scoring

1. Enter the highest score on any 1 of the 4 sleep items (items 1 to 4).

Enter the highest score on any 1 of the 4 weight items (items 6 to 9).

Enter the highest score on either of the 2 psychomotor items (15 and 16).

2. This gives one score for each of the nine major depressive disorder symptom domains.

3. Add the scores of the 9 items (sleep, weight, psychomotor changes, depressed mood, decreased interest, fatigue, guilt, concentration, and suicidal ideation) to obtain the total score. Total scores range from 0-27.

Interpretation

Qids score
Severity of Depression
HDRS17 score
1 -5
None
<8
6-10
Mild
8-13
11-15
Moderate
14-19
16-20
Severe
20-25
21-27
Very severe
>25

Clinician's rating version

 

Self-rating version


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