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Table 5 Illness characteristics of the study groups

From: Cognitive impairment in manic bipolar patients: important, understated, significant aspects

  Manic subgroup N = 54 Depressive subgroup N = 32 Euthymic subgroup N = 30 Mixed subgroup N = 21 p
Age at illness onset (Y) 22 (19–28) 23 (20–27) 25.5 (24–28) 23 (20–28) <0.0001*
Illness length (Y) 16.59 ± 7.59 17.09 ± 8.43 12.3 ± 6.86 15.29 ± 7.27 NS**
Hospitalizations (N) 11.65 ± 4.97 12.31 ± 4.73 8.27 ± 4.10 12.38 ± 6.37 0.005**
  1. Values are presented as mean ± SD for continuous parametric data, median (range) for continuous nonparametric data
  2. Y years, N numbers, NS no statistical significant (p ≥ 0.05)
  3. * Kruskal–Wallis test; ** ANOVA