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International Journal of Bipolar Disorders

Table 1 Basic demographic and clinical characteristics of the study sample

From: A comparison of the 33-item Hypomania Checklist with the 33-item Hypomania Checklist-external assessment for the detection of bipolar disorder in adolescents

Variables

Whole sample (n = 260)

MDD (n = 113)

BD (n = 147)

BD vs MDD

N

%

N

%

N

%

χ2

P

Male gender

59

22.69

31

27.43

28

19.05

2.561

0.110

 

Mean

SD

Mean

SD

Mean

SD

Z*

P

Age (years)

15.42

1.62

15.30

1.51

15.51

1.70

− 1.015

0.310

Education level (years)

9.76

1.94

9.45

1.93

10.00

1.93

− 1.848

0.065

Age of onset (years)

14.33

4.21

14.21

5.40

14.41

3.01

− 1.170

0.242

Number of episodes

1.20

0.85

1.24

1.18

1.17

0.46

− 0.294

0.768

  1. BD bipolar disorder, MDD major depressive disorder, SD standard deviation
  2. *Mann–Whitney U test
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