Skip to main content
Fig. 1 | BMC Psychology

Fig. 1

From: The GAD-7 and the PHQ-8 exhibit the same mathematical pattern of item responses in the general population: analysis of data from the National Health Interview Survey

Fig. 1

Responses to the 16 depressive-symptom items of the Center for Epidemiologic Studies Depression Scale. Responses to the 16 items are presented using a normal scale (A), and a logarithmic scale (B). A The lines for the item responses appear to cross at a single point between “rarely” and “a little of the time,” whereas they display a converging pattern between “a little of the time” and “all of the time.” B On a logarithmic scale, the lines for the 16 items exhibit a parallel linear pattern from “a little of the time” to “all of the time.” Image used under CC-BY license: PLoS ONE, https://doi.org/10.1371/journal.pone.0165928.g001

Back to article page

BMC Psychology

ISSN: 2050-7283

Contact us