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. 2021 Aug 31;16(8):e0256064. doi: 10.1371/journal.pone.0256064

Table 1. Descriptive data related to IPH cases, numbers (n) and percentages (%), with Fisher’s exact test for male-perpetrated and female-perpetrated cases with dichotomised variables.

N = 48 male and 10 female perpetrators, total of 59 cases*.

Variables based on perpetrated cases, including suicide cases Male homicide cases, n = 49* Female homicide cases, n = 10 Dichotomised variables Male homicide cases, n = 49* Female homicide cases, n = 10 Fischer Exact Test, 2-sided
n % n % n % n %
Suicide after homicide 8 16.3 0 00
Relationship at homicide Relationship
Spouse ** 16 32.7 2 20.0 Spouse 29 59.2 4 40.0 .311
Cohabiting partner ** 13 26.5 2 20.0 Other 20 40.8 6 60.0
Non-cohabiting partner 6 12.2 4 40.0
Divorced/separated 9 18.4 1 10.0
Other 5 10.2 1 10.0
Length of relationship before divorce/separation or homicide Length of relationship
< I year 4 8.2 2 20.0 1–5 years 19 47.5 5 50 1.000
1–5 years 15 30.6 3 30.0 > 5 years 21 52.5 5 50
6–10 years 4 8.2 1 10.0
>10 years 17 34.7 4 40.0
No information 9 18.4 0 0.0
Ongoing or conceivable divorce/separation Ongoing divorce/separation
Yes 20 40.8 3 30.0 Yes 20 40.8 3 30.0 .725
No 29 59.2 7 70.0 No 29 59.2 7 70.0
Homicide location Homicide location
At home 38 77.6 7 70.0 At home 38 77.6 7 70.0 .688
Workplace 2 4.1 0 0.0 Other places 11 22.4 3 30.0
Outdoors 7 14.3 1 10.0
Other 2 4.1 2 20.0
Children present at time of homicide Children present
Victim of violence 1 2.0 0 0.0 Present 13 35.1 2 28.6 1.000
Witnessed homicide 6 12.2 1 10.0 Not present 24 64.9 5 71.4
At home but did not witness homicide 6 12.2 1 10.0
Not present 24 49.0 5 50.0
No information 12 24.6 3 30.0
Variables based on perpetrated cases, excluding suicide cases Male homicide cases, N = 41 Female homicide cases, N = 10 Dichotomised variables Male homicide cases, n = 48 Female homicide cases, N = 10 Fischer Exact test, 2-sided
n % n % n % n %
Verdict in district court Verdict in district court
Murder 35 85.4 5 50.0 Murder 35 85.4 5 50.0 .027
Manslaughter 1 2.4 3 30.0 All other 6 14.6 5 50.0
Involuntary manslaughter 3 7.3 1 10.0
Not guilty 2 4.9 1 10.0
Verdict in higher court Verdict in higher court
Murder 36 87.8 5 50.0 Murder 36 87.8 5 50.0 .017
Manslaughter 2 4.9 2 20.0 All other 5 12.2 5 50.0
Involuntary manslaughter 3 7.3 2 20.0
Not guilty 0 0.0 1 10.0
Sentence in higher court Sentence in higher court
Life imprisonment 6 14.6 0 0.0 Life imprisonment 6 14.6 0 0.0 .331
Fixed-term imprisonment 22 53.7 9 90.0 Fixed-term imprisonment 22 53.7 9 90.0 .067
Forensic psychiatric care 11 26.8 0 0.0 Forensic psychiatric care 11 26.8 0 0.0 .094
Deportation *** 4 9.8 0 0.0 Deportation *** 4 9.8 0 0.0 .573
Mode of killing Mode of killing
Knife 19 6 Knife/Other 19 39.6 6 60.0 .499
    Number of stabs: -
    1–2 5 - 3 - -
    3–5 5 - 0 - -
    >10 5 - 2 - -
No information on record 4 - 1 - -
Firearm 8 0 - Firearm/Other 8 16.7 0 0.0 .329
Strangulation 7 1 - Strangulation/Other 7 14.6 1 10.0 1.000
Blunt violence or other 11 3 - Blunt violence/Other 11 22.9 3 30.0 1.000
Motivational factors Motivational factors
Jealousy 15 - 2 - Jealousy/Other 15 36.6 2 20.0 .463
Separation 16 - 3 - Separation/Other 16 39.0 3 30.0 .725
Subjected to IPV 1 - 5 - Subjected to IPV/Other 1 2.4 4 40.0 .004
Financial conflict 3 - 3 - Financial conflict/Other 3 7.3 3 30.0 .081
Custody dispute 1 - 0 - Custody dispute/Other 1 2.4 0 0.0 1.000
Other 17 - 0 -

* There were 49 male-perpetrated cases if IPHS were included and 41 male-perpetrated cases if IPHS were excluded, respectively, as one individual had killed two ex- partners.

** One married individual was not cohabiting with the partner and one cohabiting couple had separated at the time of the homicide.

*** Two individuals were sentenced to life imprisonment + deportation and two individuals were sentenced to fixed-term imprisonment + deportation.

More than one mode of killing and motivational factors were reported in the court records; numbers (n) and percentage (%) do thus not correspond with the total n.