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Table 1 Baseline characteristics of participants

From: Risk factors for lethal outcome in patients with delirium tremens - psychiatrist's perspective: a nested case-control study

  Cases Controls Case/controls statistics All survivors All patients (cases + all survivors)
Sex      
  Male 14 28   175 (99.4%) 189 (99.5%)
  Female - - 1 (0.6%) 1 (0.5%)
Age M ± SD 56.64 ± 11.34 56.39 ± 9.51 t(40) = −0.075; p = 0.940 50.97 ± 9.60 51.39 ± 9.82
Death      
  No - 28   176 176 (92.6%)
  Yes 14 - - 14 (7.4%)
Heredity      
  No 11 (78.6%) 19 (67.9%) χ2(1) = 0.131; p = 0.717 106 (60.2%) 116 (61.1%)
  Yes 3 (21.4%) 9 (32.1%) 48 (27.3%) 51 (26.8%)
  Missing - - 23 (12.5%) 23 (12.1%)
Hospitalization      
  > 1 11 (78.6%) 6 (21.4%) χ2(1) = 12.649; p = 0.001* 108 (61.4%) 119 (62.6%)
  First 3 (21.4%) 22 (78.6%) 60 (34.1%) 63 (33.2%)
  Missing - - 8 (4.5%) 8 (4.2%)
Duration of treatment in days M ± SD 4.29 ± 3.77 17.89 ± 11.90 U = 21.000; p = 0.000* 16.34 ± 8.39 15.43 ± 8.73
Marital status      
  Not married 8 (57.1%) 20 (71.4%) χ2(1) = 0.857; p = 0.355 58 (33.0%) 66 (34.7%)
  Married/widower 6 (42.9%) 8 (28.6%) 104 (59.1%) 110 (57.9%)
  Missing - - 14 (8.0%) 14 (7.4%)
Professional qualifications      
  High 6 (42.9%) 16 (57.1%) χ2(1) = 0.764; p = 0.382 53 (30.1%) 59 (31.1%)
  Low 8 (57.1%) 12 (42.9%) 107 (60.8%) 115 (60.5%)
  Missing - - 16 (9.1%) 16 (8.4%)
Duration of alcohol consumption in years M ± SD 19.64 ± 10.02 20.39 ± 12.20 U = 193.500; p = 0.946 17.41 ± 8.51 17.59 ± 8.63
K+ in serum M ± SD 4.50 ± 0.71 3.74 ± 0.59 t(40) = −3.661; p = 0.001* 3.87 ± 1.62 3.92 ± 1.58
AST/ALT ratio M ± SD 2.04 ± 1.43 1.80 ± 0.77 t(40) = −0.600; p = 0.557 2.05 ± 2.06 2.05 ± 2.01
CPK in serum M ± SD 2,910.79 ± 7,323.98 1,421.39 ± 1,841.46 U = 180.000; p = 0.669 1,413.82 ± 2,693.66 1,555.43 ± 3,391.42
Epileptic status      
  No 11 (78.6%) 22 (78.6%) χ2(1) = 0.000; p = 1.000 117 (66.5%) 128 (67.4%)
  Yes 3 (21.4%) 6 (21.4%) 56 (31.8%) 59 (31.1%)
  Missing - - 3 (1.7%) 3 (1.6%)
Liver damage      
  No 10 (71.4%) 18 (64.3%) χ2(1) = 0.214; p = 0.643 129 (73.3%) 139 (73.2%)
  Yes 4 (28.6%) 10 (35.7%) 43 (24.4%) 47 (24.7%)
  Missing - - 4 (2.3%) 4 (2.1%)
Transfer to another department      
  No 13 (92.9%) 24 (85.7%) χ2(1) = 0.454; p = 0.500 145 (82.4%) 158 (83.2%)
  Yes 1 (7.1%) 4 (14.3%) 27 (15.3%) 28 (14.7%)
  Missing - - 4 (2.3%) 4 (2.1%)
  1. *p < 0.05 (significant difference); K+, potassium in serum; AST/ALT, aspartate aminotransferase/alanine aminotransferase; CPK, creatine phosphokinase; M, mean; SD, standard deviation.