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. 2016 Jun 15;6:27964. doi: 10.1038/srep27964

Table 1. Clinical features of healthy control, depression patient, and patient subgroup.

  HC (n = 116) MDD (n = 76) Statistics
Female: Male 72:44 48:28 p = 1, Χ2 = 0#
Age (Year) 35.3 ± 12.1 36.2 ± 11.3 t = −0.53, p = 0.60+
Years of Education 12.8 ± 4.0 12.1 ± 3.6 t = 1.29, p = 0.20+
Age of Onset (Year) NA 33.8 ± 1.3 NA
HDRS-17 score 1.9 ± 1.9 22.7 ± 4.6 t = −37.5, p < 2.2e-16+
BDI-II score 4.9 ± 5.5 22.6 ± 7.8 t = −17.2, p < 2.2e-16+
Subgroup of MDD Low Severity High Severity  
Female: Male 24:16 24:12 Χ2 = 0.13#, p = 0.72
Age (Year) 35.72 ± 11.02 36.69 ± 11.65 t = 0.37, p = 0.71+
Years of Education 12.07 ± 3.68 12.11 ± 3.55 t = 0.04, p = 0.97+
Age of Onset (Year) 34.35 ± 11.21 35.53 ± 11.74 t = 0.45, p = 0.66+
HDRS-17 score 20.05 ± 3.68 25.58 ± 4.16 t = 6.49, p < 1.38 e-8+
BDI-II score 17.38 ± 5.81 28.42 ± 5.15 t = 8.78, p < 4.27 e-13+

#Chi-square test. +Student’s t-test, two-tailed. Numerical data are shown as mean ± SD.