To what extent does the anxiety scale of the Four-Dimensional Symptom Questionnaire (4DSQ) detect specific types of anxiety disorder in primary care? A psychometric study

Table 3 Occurrence of multiple anxiety disorders and anxiety-depression comorbidity, over the study samples pooled and the range across the separate study samples

Disorder	N	Multiple anxiety disorders (%)^a		Anxiety-depression comorbidity (%)^a
		pooled	range	pooled	range
Panic disorder^b	176	86	70-96	59	39-80
Agoraphobia^c	176	88	71-95	56	37-76
Social phobia	158	71	58-80	63	41-83
GAD^d	225	56	30-80	66	50-79
Specific phobia	42	59	46-66	74	46-86
OCD^e	47	85	82-100	55	54-63
PTSD^f	52	73	72-83	63	61-83

^aPercentages of patients with specific anxiety disorders who also had one or more other anxiety disorders or comorbid depressive disorder.
^bPanic disorder without agoraphobia plus panic disorder with agoraphobia.
^cAgoraphobia without history of panic disorder plus panic disorder with agoraphobia.
^dGeneralized anxiety disorder.
^eObsessive compulsive disorder.
^fPost traumatic stress disorder.

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