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Table 1 Characteristics of the 147 psychiatric inpatients in the study

From: A naturalistic study of high-dose unilateral ECT among severely depressed inpatients: how does it work in the clinical practice?

Characteristics General (n = 147) ECT group (n = 43) Non-ECT group (n = 104) P (between groups)
Age (±SD) 45.41 (±14.59) 51.12 (±14.85) 43.07 (±13.88) 0.002*
Number of previous hospitalizations (±SD) 3.33 (±4.88) 2.9 (±3.13) 5.51 (±5.45) 0.51
Age at the last hospitalization (±SD) 41.99 (±13.90) 48.64 (±15.18) 39.39 (±1.6) 0.004*
Sex
 Male (%) 57 (38.8) 11 (25.6) 46 (44.2) 0.03*
Ethnicity
 White (%) 125 (85) 41 (95.3) 84 (80.8) 0.02*
 Other (%) 22 (15) 2 (4.7) 20 (19.2)  
Had ECT before
 Yes (%) 25 (17) 14 (32.5) 11 (10.5) 0.001*
Presence of Melancholy
 Yes (%) 99 (72.8) 33 (80.5) 66 (69.5) 0.132
Presence of Psychotic Symptoms     
 Yes (%) 47 (33.1) 17 (41.5) 30 (29.7) 0.177
Maniac Episode in the Past
 Yes (%) 50 (35.5) 17 (42.5) 33 (32.7) 0.272
Number of medications in use:
Anti-depressives
 0 (%) 53 (35.8) 37 (40.2) 16 (44.4) 0.9
 1 (%) 62 (41.9) 45 (48.9) 17 (48.4)  
 2 (%) 12 (8.1) 9 (9.8) 3 (8.3)  
 3 (%) 1 (0.7) 1 (1.1) 0  
Anticonvulsants
 0 (%) 105 (70.9) 33 (84.6) 72 (75.8) 0.46
 1 (%) 26 (17.6) 5 (12.8) 21 (22.1)  
 2 (%) 3 (2) 1 (2.6) 2 (2.1)  
Lithium
 Yes (%) 25 (16.9) 5 (12.8) 20 (21.3) 0.19
Typical anti-psychotics
 0 (%) 90 (60.8) 60 (65.9) 30 (76.9) 0.27
 1 (%) 32 (21.6) 26 (28.6) 6 (15.4)  
 2 (%) 8 (5.4) 5 (5.5) 3 (7.7)  
Atypical anti-psychotics
 0 (%) 49 (33.1) 38 (41.3) 11 (28.2) 0.13
 1 (%) 75 (50.7) 51 (55.4) 24 (61.5)  
 2 (%) 7 (4.7) 3 (3.3) 4 (10.3)  
Benzodiazepines
 0 (%) 82 (55.4) 54 (58.1) 28 (71.8) 0.29
 1 (%) 49 (33.1) 38 (40.9) 11 (28.2)  
 2 (%) 1 (0.7) 1 (1.1) 0  
  1. ECT Electroconvulsive therapy, SD Standard deviation
  2. * P < 0.05