Table 2 Description of sociodemographic, psychiatric, and criminal background and murder characteristics of NGRI and guilty groups
| Â | All Sample (N=128)* | Guilty Group (n = 56) | NGRI Group (n = 72) | Statistic |
|---|---|---|---|---|
Demographics | ||||
 Age at offence | 34.9 (12.3) | 34.1 (12.3) | 35.6 (12.3) | t(126) = 0.48, p = 0.48 |
 Migrant |  |  |  | χ2(1) = 5.85, p = 0.016 |
  Yes | 32.8% (42) | 21.4% (12) | 41.7% (30) |  |
  No | 67.2% (86) | 78.6% (44) | 58.3% (42) |  |
 Family status |  |  |  | χ2(2) = 8.35, p = 0.015 |
  Single | 54.7% (70) | 44.6% (25) | 62.5% (45) |  |
  Married | 25.0% (32) | 37.5% (21) | 15.3% (11) |  |
  Divorced | 20.3% (26) | 17.9% (10) | 22.2% (16) |  |
 Area of residence |  |  |  | χ2(1) = 21.41, p<0.001 |
  Center | 40.5% (51) | 17.9% (10) | 58.6% (41) |  |
  Periphery | 59.5% (75) | 82.1% (46) | 41.4% (29) |  |
 Religion |  |  |  | χ2(1) = 22.24, p<0.001 |
  Jewish | 71.1% (86) | 49.1% (26) | 88.2% (60) |  |
  Muslim | 28.9% (35) | 50.9% (27) | 11.8% (8) |  |
Psychiatric background | ||||
 Hospitalization |  |  |  | χ2(1) = 26.48, p<0.001 |
  Yes | 50.8% (65) | 25.0% (14) | 70.8% (51) |  |
  No | 49.2% (63) | 75.0% (42) | 29.2% (21) |  |
 Number of hospitalizations | 3.6 (7.8) | 1.1 (3.6) | 5.5 (9.4) | t(95.4) = 3.65, p<0.001 |
Criminal background | ||||
 Criminal background |  |  |  | χ2(1) = 1.41, p = 0.24 |
  Yes | 62.0% (75) | 67.9% (36) | 57.4% (39) |  |
  No | 38.0% (46) | 32.1% (17) | 42.6% (29) |  |
 Alcohol use |  |  |  | χ2(1) = 0.63, p = 0.43 |
  Yes | 44.7% (51) | 49.0% (24) | 41.5% (27) |  |
  No | 55.3% (63) | 51.0% (25) | 58.5% (38) |  |
 Drug use |  |  |  | χ2(1) = 0.10, p = 0.76 |
  Yes | 54.4% (62) | 52.8% (28) | 55.7% (34) |  |
  No | 45.6% (52) | 47.2% (25) | 44.3% (27) |  |
Murder characteristics | ||||
 Place of murder |  |  |  | χ2(2) = 2.12, p = 0.35 |
  Home | 59.4% (76) | 53.6% (30) | 63.9% (46) |  |
  Street | 16.4% (21) | 21.4% (12) | 12.5% (9) |  |
  Other | 24.2% (31) | 25.0% (14) | 23.6% (17) |  |
 Accomplice |  |  |  | χ2(1) = 12.35, p<0.001 |
  Yes | 9.4% (12) | 19.6% (11) | 1.4% (1) |  |
  No | 90.6% (116) | 80.4% (45) | 98.6% (71) |  |
 Victim number |  |  |  | χ2(1) = 0.19, p = 0.67 |
  One | 90.6% (115) | 89.3% (50) | 91.5% (65) |  |
  Two or more | 9.4% (12) | 10.7% (6) | 8.5% (6) |  |
 Victim acquaintance |  |  |  | χ2(1) = 0.41, p = 0.52 |
  Yes | 89.1% (114) | 91.1% (51) | 87.5% (63) |  |
  No | 10.9% (14) | 8.9% (5) | 12.5% (9) |  |
 Victim relation |  |  |  | χ2(4) = 5.03, p = 0.28 |
  Parents | 19.5% (25) | 12.5% (7) | 25.0% (18) |  |
  Spouse | 21.9% (28) | 26.8% (15) | 18.1% (13) |  |
  Family | 15.6% (20) | 14.3% (8) | 16.7% (12) |  |
  Acquainted | 32.0% (41) | 37.5% (21) | 27.8% (20) |  |
  Stranger | 10.9% (14) | 8.9% (5) | 12.5% (9) |  |
 Conflict |  |  |  | χ2(1) = 0.14, p = 0.71 |
  Yes | 68.0% (83) | 69.8% (37) | 66.7% (46) |  |
  No | 32.0% (39) | 30.2% (16) | 33.3% (23) |  |
 Planning |  |  |  | χ2(1) = 0.37, p = 0.54 |
  Yes | 48.8% (60) | 51.8% (29) | 46.3% (31) |  |
  No | 51.2% (63) | 48.2% (27) | 53.7% (36) |  |
 Weapon |  |  |  | χ2(3) = 3.40, p = 0.094 |
  Gun | 12.5% (16) | 16.1% (9) | 9.7% (7) |  |
  Knife | 51.6% (66) | 58.9% (33) | 45.8% (33) |  |
  Beating with hands or object | 18.8% (24) | 16.1% (9) | 20.8% (15) |  |
  More than one | 17.2% (22) | 8.9% (5) | 23.6% (17) |  |
 Behavior after murder |  |  |  | χ2(3) = 36.20, p<0.001 |
  Stay/help | 42.0% (50) | 13.2% (7) | 65.2% (43) |  |
  Leave/suppress evidence | 45.4% (54) | 62.3% (33) | 31.8% (21) |  |
  Suicide | 4.2% (5) | 9.4% (5) | 0.0% (0) |  |
  Other | 8.4% (10) | 15.1% (8) | 3.0% (2) |  |
 Injured victims |  |  |  | χ2(1) = 0.03, p = 0.86 |
  Yes | 17.2% (22) | 17.9% (10) | 16.7% (12) |  |
  No | 82.8% (106) | 82.1% (46) | 83.3% (60) |  |