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Table 1 Demographic, offending history and mental health characteristics by Indigenous status

From: Alcohol and other drug use among Aboriginal and Torres Strait Islander and non-Aboriginal and Torres Strait Islander men entering prison in New South Wales

Characteristic Indigenous (n = 40) Non-Indigenous (n = 160) Total P-value
Age (years) Median 28.7 Median 30.0   0.201
  IQR 23 to 35 IQR 24 to 37   
Age category (years)
  18–24 14 (35.0 %) 43 (26.9 %) 57 (28.5 %) 0.362
  25–39 22 (55.0 %) 88 (55.0 %) 110 (55.0 %)  
  40+ 4 (10.0 %) 29 (18.1 %) 33 (16.5 %)  
Marital status
  Married/de facto 10 (25.0 %) 40 (25.0 %) 50 (25.0 %) 0.862
  Single/separated 27 (67.5 %) 116 (72.5 %) 143 (71.5 %)  
  Missing 3 (7.5 %) 4 (2.5 %) 7 (3.5 %)  
Country of birth
  Australia 38 (95.0 %) 151 (94.4 %) 189 (94.5 %) 0.892
  Other 2 (5.0 %) 9 (5.6 %) 11 (5.5 %)  
Educational attainment
  Did not complete year 10 17 (42.5 %) 51 (31.9 %) 68 (34.0 %) 0.422
  Completed year 10 13 (32.5 %) 57 (35.6 %) 70 (35.0 %)  
  HSC/Certificate/Degree 10 (25.0 %) 52 (32.5 %) 62 (31.0 %)  
Juvenile detention
  Yes 16 (40.0 %) 53 (33.1 %) 69 (34.5 %) 0.432
  No 24 (60.0 %) 106 (66.3 %) 130 (65.0 %)  
  Missing - 1 (0.6 %) 1 (0.5 %)  
Offence type
  Violent 25 (62.5 %) 80 (50.0 %) 105 (52.5 %) 0.102
  Non-violent 12 (30.0 %) 75 (46.9 %) 87 (43.5 %)  
  Missing 3 (7.5 %) 5 (3.1 %) 8 (4.0 %)  
Number of arrests, Mean and median Median 15.0 Median 10.0   0.061
IQR 1.0 to 7.5 IQR 1.0 to 11.0   
Kessler psychological distress scale (K10)
  No distress: 10–19 3 (7.5 %) 12 (7.5 %) 15 (7.5 %) 0.842
  Mild to moderate: 20–29 5 (12.5 %) 26 (16.2 %) 31 (15.5 %)  
  Severe distress: 30+ 32 (80.0 %) 122 (76.3 %) 154 (77.0 %)  
Impulsive personality (IPDE)
  Positive 21 (52.5 %) 67 (41.9 %) 88 (44.0 %) 0.232
  Negative 19 (47.5 %) 93 (58.1 %) 112 (56.0 %)  
Ever treated for a mental health problem
  Yes 13 (32.5 %) 48 (30.0 %) 61 (30.5 %) 0.762
  No 26 (65.0 %) 108 (67.5 %) 134 (67.0 %)  
  Missing 1 (2.5 %) 4 (2.5 %) 5 (2.5 %)  
Have previously attempted suicide
  Yes 8 (20.0 %) 25 (15.6 %) 33 (16.5 %) 0.522
  No 31 (77.5 %) 130 (81.3 %) 161 (80.5 %)  
  Missing 1 (2.5 %) 5 (3.1 %) 6 (3.0 %)  
Family member attempted suicide
  Yes 5 (12.5 %) 28 (17.6 %) 33 (16.5 %) 0.462
  No 33 (82.5 %) 126 (78.7 %) 159 (79.5 %)  
  Missing 2 (5.0 %) 6 (3.7 %) 8 (4.0 %)  
Have previously self-harmed
  Yes 4 (10.0 %) 10 (6.2 %) 14 (7.0 %) 0.422
  No 35 (87.5 %) 144 (90.0 %) 179 (89.5 %)  
  Missing 1 (2.5 %) 6 (3.8 %) 7 (3.5 %)  
Traumatic brain injury     
  Yes 33 (82.5 %) 131 (81.9 %) 164 (82.0 %) 0.572
  No 7 (7.5 %) 29 (18.1 %) 36 (18.0 %)  
  1. 1Mann Whitney U Test
  2. 2Chi-square test