Interstudy Comparison of the Results
| Characteristic | McKee and Shea33 | Bourget and Gagné8 | Bourget and Bradford7 | Somander and Rammer10 | Marleau23 | Kauppi et al. |
|---|---|---|---|---|---|---|
| Sample, n | 20 | 77 | 13 | 94 | 10 | 200 |
| Maternal, % | 20 | — | 69 | 30 f-s/50 f | — | 61 |
| Paternal, % | — | 77 | 31 | 46 f-s/17 f | 10 | 39 |
| Neonaticide, n | 2 | — | — | 1 | — | 56 |
| Filicide-suicide, n | 3 | 46 | — | 58 | — | 75 |
| Other filicide, n | — | — | — | 24 | — | 69 (65 studied more closely) |
| Age of perpetrator, y | — | — | 27.3 | — | 32 | — |
| Mothers | 29.3 | — | — | — | — | 27 (n = 65) |
| Fathers | — | 39 | — | — | — | 29 (n = 65) |
| Married or cohabiting, % | 65 | — | 61 | — | 40 | 84–70% (n = 65) |
| Mean age of victim, y | 2.7 | 7 | 2.8 | 6.5 f-s/3.5 f | 5 | 3.2 (n = 200) |
| Maternal | — | — | — | — | — | 1.6 |
| Paternal | — | — | — | — | — | 5.6 |
| Female victims, % | 46 | 45 | — | 50 | 54 | 50 (n = 200) |
| Male victims, % | 54 | 55 | — | 50 | 46 | 50 |
| Altruistic motive, % | 15 | — | — | Almost all | — | — |
| Mental illness, % | — | 60 | — | — | — | — |
| Psychosis, % | 40 | 10 | — | 40 | — | 51 m/20 f |
| Depression, % | 25 | 52 | 31 | 40 | — | 32 m/7 f |
| Personality disorder, % | — | — | 53 | 80 | — | 41 m/67 f |
| Alcohol abuse, % | 5 | 5 | — | 25 | — | 3 m/47 f |
| Child abuse, % | — | 33 | — | 6 | — | 18 |
| Domestic violence, % | 21 | 40 | — | — | — | 33 m victims/45 f abusers |
| Not responsible by reason of insanity, % | 20 | — | 15 | Almost all | — | 76 m/18 f |
f-s, filicide-suicides; f, other filicides; m, male; f, female; —, data not reported.