Figure 1From: Factor analysis of the Zung self-rating depression scale in a large sample of patients with major depressive disorder in primary care Characteristics of depressive symptoms according to the Zung Self-Rating Depression Scale (n = 1049). The highest score in a single item of the ZSDS is 4 (i.e. most of the time/always/almost always) and the lowest score is 1 (i.e. a little of the time/very rarely/rarely)Back to article page