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Table 4 Socio-demographic and clinical differences of the BD II sample (n = 480) between patients with long DUI (n = 400) or short DUI (n = 80)

From: Correlates of long duration of untreated illness (DUI) in patients with bipolar disorder: results of an observational study

Characteristics

Long DUI

(n = 400)

Short DUI

(n = 80)

F/χ2

p

Age at onset (years), mean ± sd

29.0 ± 11.6

38.0 ± 16.5

34.466

 < 0.001

Predominant polarity, type, n (%)

 Depressive

267 (66.8)

41 (51.2)

7.038

0.030

Onset polarity, type, n (%)

 Depressive

325 (81.5)

48 (60.0)

19.044

 < 0.001

Duration of illness (years), mean ± sd

22.7 ± 13.3

10.8 ± 12.6

54.660

 < 0.001

Depressive episodes (number), mean ± sd

5.9 ± 4.6

4.1 ± 4.2

10.718

0.001

Affective episodes, total (number), mean ± sd

9.8 ± 7.6

7.0 ± 7.8

8.875

0.003

  1. The statistically significant results (p<0.005) are in bold type