Table 1 Socio-demographic and clinical characteristics of samples in this study.

From: Optimizing multi-domain hematologic biomarkers and clinical features for the differential diagnosis of unipolar depression and bipolar depression

Characteristic

Unipolar depression N = 918

Bipolar depression N = 242

p

Agea^ (years)

43.08 ± 14.67

37.79 ± 14.56

<0.001

Femalea*

629 (0.685)

142 (0.587)

0.004

Age of onseta^ (years)

39.81 ± 14.60

25.62 ± 10.84

<0.001

Disease durationa^(years)

3.34 ± 5.612

12.14 ± 10.55

<0.001

  1. ^Values shown as mean and standard deviation.
  2. *Values shown as count and percent of distribution.
  3. aUnipolar depression is significantly different from bipolar depression.
  4. The comparison of sex distributions was performed using χ2 test. Comparisons of age, age of onset and total disease duration were performed using a two-tailed two-sample t test.
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