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Table 2 Description of the datasets

From: 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

Study A B C D E
Numbersa 295 170 118 156 230
Gender (% female) 60.3 72.4 64.4 61.5 67.8
Age [mean (SD)] 39.5 (9.2) 44.9 (15.9) 49.5 (11.2) 38.1 (12.1) 43.5 (7.5)
4DSQ scores [mean (SD)]      
- Distress (range 0–32) 22.9 (7.2) 21.0 (7.5) 19.4 (7.1) 19.8 (9.2) 20.7 (9.0)
- Depression (range 0–12) 4.0 (3.4) 4.3 (3.8) 3.7 (3.1) 4.4 (4.0) 4.9 (4.4)
- Anxiety (range 0–24) 5.9 (5.4) 5.9 (5.8) 7.0 (5.2) 6.6 (6.3) 9.4 (7.3)
- Somatization (0–32) 14.2 (6.9) 12.7 (7.2) 14.2 (6.9) 12.0 (8.0) 14.7 (7.7)
DSM-IV diagnoses (%)      
- Panic disorderb 7.8 8.8 26.3 26.3 28.7
- Agoraphobiac 7.1 12.4 32.2 21.8 27.0
- Social phobia 10.8 7.1 22.9 21.2 23.5
- GADd 20.7 32.9 18.6 16.7 26.1
- Specific phobia N/A 17.1 N/A 8.3 N/A
- OCDe N/A N/A N/A 5.1 17.0
- PTSDf N/A N/A N/A 3.8 20.0
- Major depressive disorder 49.5 67.1 42.4 50.6 40.0
- Dysthymia 2.4 18.2 12.7 3.8 28.7
  1. aNumbers of patients refer to those who completed the 4DSQ and a diagnostic interview.
  2. bPanic disorder without agoraphobia plus panic disorder with agoraphobia.
  3. cAgoraphobia without history of panic disorder plus panic disorder with agoraphobia.
  4. dGeneralized anxiety disorder.
  5. eObsessive compulsive disorder.
  6. fPost traumatic stress disorder.
  7. N/A: not assessed.