J
Janet B. W. Williams
Researcher at Columbia University
Publications - 180
Citations - 238340
Janet B. W. Williams is an academic researcher from Columbia University. The author has contributed to research in topics: Depression (differential diagnoses) & Anxiety. The author has an hindex of 73, co-authored 178 publications receiving 217291 citations. Previous affiliations of Janet B. W. Williams include University of York.
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The PHQ-9: validity of a brief depression severity measure.
TL;DR: In addition to making criteria-based diagnoses of depressive disorders, the PHQ-9 is also a reliable and valid measure of depression severity, which makes it a useful clinical and research tool.
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A Brief Measure for Assessing Generalized Anxiety Disorder: The GAD-7
TL;DR: In this article, a 7-item anxiety scale (GAD-7) had good reliability, as well as criterion, construct, factorial, and procedural validity, and increasing scores on the scale were strongly associated with multiple domains of functional impairment.
Journal Article
A Brief Measure for Assessing Generalized Anxiety Disorder: The GAD-7
TL;DR: The GAD-7 is a valid and efficient tool for screening for GAD and assessing its severity in clinical practice and research.
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Validation and utility of a self-report version of PRIME-MD : The PHQ Primary Care Study
TL;DR: The study suggests that the PHQ has diagnostic validity comparable to the original clinician-administered PRIME-MD, and is more efficient to use.