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Table 1 Distribution of patients’ socio-demographic and clinical characteristics by allocated treatment

From: Effectiveness of lithium in subjects with treatment-resistant depression and suicide risk: results and lessons of an underpowered randomised clinical trial

  Lithium + Usual care (n = 29) Usual care (n = 25) p
  N %/mean n %/mean  
Females (%) 16 55 18 72 0.202
Age (years), mean (SD) 29 46 (12.3) 25 47 (9.4) 0.853
Education (%)      0.951
Primary school certificate 13 45 11 44  
High school education/degree 16 55 14 56  
Occupational status (%)      0.342
Employed 15 52 8 32  
Unemployed 6 21 7 28  
Other 8 28 10 40  
Marital status      0.944
Unmarried 8 28 6 24  
Married 15 52 14 56  
Divorced/Widowed 6 21 5 20  
Psychiatric admissions in the previous 12 months (%)      
0 10 34 7 28  
1 11 38 9 36 0.781
≥2 8 28 9 36  
Personality disorders (%) 10 34 7 28 0.609
Current alcohol/drug abuse 0 0 2 8 0.210
History of alcohol abuse 4 14 8 32 0.188
Acts of self-harm in the previous 12 months (%)      0.721
1 16 55 15 60  
≥2 13 45 10 40  
Physical illness (%) 12 41 5 20 0.092
Past use of antidepressants (number), mean (SD) 29 3 (1.9) 25 3 (1.9) 0.470
Past use of lithium (%) 4 14 3 12 1.000
  1. Legend: SD = Standard deviation.