Patient Reported Outcome Questionnaires
| Disease |
|
| Construct |
|
| Name of Measure | Patient Health Questionnaire (PHQ-9) |
| Description of Measure | Assesses the presence and severity of depressive symptoms |
| Validated in what age group |
|
| Validity (construct, content, convergent, divergent) |
Low positive predictive value.
PHQ-9 score greater than or equal to 10 has sensitivity of 88% and specificity of 88% for major depression. Construct validity: association between PHQ-9 scores and functional status, disability days, and symptom-related difficulty. Criterion validity: assessed against an independent structured mental health professional reinterview, sample of 580 patients External validity: replicating findings from 3000 primary care patients in second sample of 3000 OBGYN patients |
| Reliability (internal consistency/test-retest) |
Cronbach's alpha = 0.89
Test-retest reliability: mental health professional conducted interviews by telephone and graded the 9 PRIME-MD questions assessing DSM-IV symptoms, using the same 4 response options as PHQ-9. Correlation r=0.84, mean scores were 5.08 (initial PHQ-9 completed in clinic) vs 5.03 (MHP telephone-administered) |
| Item Response Theory | |
| Minimally Important Difference Identified | |
| Mode |
|
| Name and Number of Subscales | |
| Number of Items | 9 |
| Item Response Scale | 0-3 |
| Alternate Versions Available | |
| Scoring | Score can range from 0-27 |
| Languages Available | English, Africaans, Arabic, Assamese, Bengali, Bulgarian, Cebuano, Croatian, Czech, Danish, Dutch, Filipino, Finnish, French, German, Greek, Gujarati, Haitian Creole, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Lithuanian, Malay, Malayalam, Mandarin, Marathi, Norwegian, Oriya, Polish, Portuguese, Punjabi, Romanian, Russian, Serbian, Simplified Chinese, Slovakian, Spanish, Swahili, Swedish, Tamil, Telugu, Thai, Traditional Chinese, Turkish, Ukranian |
| Developer's Name | Robert Spitzer, MD |
| Developer's Email | rls@columbia.edu |
| Developer Contact Info | |
| Permission Needed | No permission needed |
| Contact for Permission | |
| Reference to Original Publication | Kroenke K, Spitzer RL, Williams JB. The PHQ-9: validity of a brief depression severity measure. J Gen Intern Med. 2001 Sep;16(9):606-13. Spitzer RL, Kroenke K, Williams JB. Validation and utility of a selfreport version of PRIME-MD: the PHQ primary care study. JAMA 1999;282:1737– 44. |
| Pub Med Link | https://www.ncbi.nlm.nih.gov/pubmed/11556941 |
| Comments |
Nine items of PHQ-9 are based directly on nine diagnostic criteria for major depressive disorder in DSM-IV. Can be self-administered or clinician-administered. Limitation: need to establish sensitivity to change
Link: http://www.phqscreeners.com/ To see languages options, accept terms and conditions and scroll through drop-down options for "select language" |
