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Table 3 Clinical characteristics of the sample (N = 100)

From: Association between acute critical life events and the speed of onset of depressive episodes in male and female depressed patients

Variables Total sample (N = 100) Males (N = 39) Females (N = 61) P
HDRS total score (mean (SD))d 20.51 (5.10) 21.92 (4.90) 19.61 (5.05) 0.03b
Number of previous depressive episodes (mean (SD)) 4.10 (6.88) (n = 94) 4.08 (5.52) (n = 37) 4.11 (7.68) (n = 57) 0.73b
Main diagnosis (according to ICD-10 criteria) 0.61c
- F32: Depressive episode (%)e 43 (43%) 18 (46.2%) 25 (41.0%)
- F33: Recurrent depressive disorder (%) 57 (57%) 21 (53.8%) 36 (59.0%)
Duration of the current depressive episode (in months) (Mean (SD)) 4.52 (4.92) 3.79 (4.89) 4.98 (4.92) 0.11b
Age at the onset of depression (in years) (Mean (SD)) 36.11 (18.59) 36.59 (18.27) 35.80 (18.94) 0.66b
Number of previous suicide attempts (Mean (SD)) 0.53 (1.25) 0.72 (1.38) 0.41 (1.16) 0.02b
  1. Notes: HDRS: 17-item version of the Hamilton Rating Scale for Depression [17]; ICD-10: International statistical classification of diseases and related health problems; 10th revision [15]; SD: standard deviation
  2. aFisher’s exact test (if at least one cell had an expected frequency < 5); b Mann-Whitney U test; c Chi-square test for two-by-two tables. All statistical tests had been two-sided
  3. dThere had been two missing values regarding HDRS items 12 and 17 which had been imputed by using the item-specific arithmetical means. Thus, it was possible to compute HDRS sum scores for the total sample (N = 100)
  4. eAll patients in this group were characterized by a first onset of depression