Related Experiment Videos
The factor structure of the PHQ-9 in palliative care
Joseph Chilcot1, Lauren Rayner, William Lee
1Health Psychology Section, Psychology Department, Institute of Psychiatry, King's College London, UK. joseph.chilcot@kcl.ac.uk
Objectives:
The Primary Care Evaluation of Mental Disorders Patient Health Questionnaire (PRIME-MD PHQ-9) is a common screening tool designed to facilitate detection of depression according to DSM-IV criteria. However, the factor structure of the PHQ-9 within the palliative care population has not been evaluated.
Methods:
300 participants completed the PHQ-9 within one week of referral to a palliative care service. Participants completed the PHQ-9 again four weeks later (n=213). Confirmatory factor analysis (CFA) and multiple-group CFA were undertaken to test the factor structure of the PHQ-9 and evaluate model invariance over time.
Results:
A two-factor model comprising somatic and cognitive-affective latent factors provided the best fit to the data. Multiple-group CFA suggested model invariance over time. Structural equation modelling revealed that follow-up (time 2) cognitive-affective and somatic symptoms were predicted by their baseline (time 1) factors.
Conclusions:
The PHQ-9 measures two stable depression factors (cognitive-affective and somatic) within the palliative care population. Studies are now required to examine the trajectories of these symptoms over time in relation to clinical intervention and events.
Related Concept Videos
Continuing Care
Factors Affecting Illness
For instance, risk factors are connected to illness, disability,...
Negative and Cognitive Symptoms of Schizophrenia
Negative Symptoms
Negative symptoms of schizophrenia manifest as deficits in normal emotional and behavioral functioning, profoundly impacting daily life. Individuals with schizophrenia often display a flat affect, characterized by a near-total absence of emotional expression,...
Methods of Documentation II: POMR
Documentation in Long-Term and Home Healthcare Setting
Long-Term Care Facilities
Methods of Documentation III: PIE