Distributional patterns of item responses and total scores on the PHQ-9 in the general population: data from the National Health and Nutrition Examination Survey

Pattern analysis of total item score and item response of the Kessler Screening Scale for Psychological Distress (K6) in a nationally representative sample of US adults

(2017) Shinichiro Tomitaka et al.   PeerJ

Risk of Suicide Attempt and Suicide Death Following Completion of the Patient Health Questionnaire Depression Module in Community Practice

(2016) Gregory E. Simon et al.   JOURNAL OF CLINICAL PSYCHIATRY

Relationship between Item Responses of Negative Affect Items and the Distribution of the Sum of the Item Scores in the General Population

(2016) Shinichiro Tomitaka et al.   PLoS One

Does Suicidal Ideation as Measured by the PHQ-9 Predict Suicide Among VA Patients?

(2016) Samantha A. Louzon et al.   PSYCHIATRIC SERVICES

Boundary curves of individual items in the distribution of total depressive symptom scores approximate an exponential pattern in a general population

(2016) Shinichiro Tomitaka et al.   PeerJ

Distribution of Total Depressive Symptoms Scores and Each Depressive Symptom Item in a Sample of Japanese Employees

(2016) Shinichiro Tomitaka et al.   PLoS One

A distribution model of the responses to each depressive symptom item in a general population: a cross-sectional study

(2015) Shinichiro Tomitaka et al.   BMJ Open

Right Tail of the Distribution of Depressive Symptoms Is Stable and Follows an Exponential Curve during Middle Adulthood

(2015) Shinichiro Tomitaka et al.   PLoS One

Does Response on the PHQ-9 Depression Questionnaire Predict Subsequent Suicide Attempt or Suicide Death?

(2013) Gregory E. Simon et al.   PSYCHIATRIC SERVICES

Thoughts of Death and Suicide Reported by Cancer Patients Who Endorsed the “Suicidal Thoughts” Item of the PHQ-9 During Routine Screening for Depression

(2013) Jane Walker et al.   PSYCHOSOMATICS

Utility of the Patient Health Questionnaire-9 to Assess Suicide Risk in Patients With Systemic Sclerosis

(2012) Ilya Razykov et al.   ARTHRITIS CARE & RESEARCH

The Patient Health Questionnaire Somatic, Anxiety, and Depressive Symptom Scales: a systematic review

(2010) Kurt Kroenke et al.   GENERAL HOSPITAL PSYCHIATRY

The PHQ-8 as a measure of current depression in the general population

(2008) Kurt Kroenke et al.   JOURNAL OF AFFECTIVE DISORDERS