Mean values and SD of the SDQ in relation to sociodemographic variables
| SDQ total score | |||
| n | Mean | SD | |
| Living arrangement | |||
| Intact family | 12 203 | 7.07 | 4.23 |
| Joint physical custody | 332 | 7.26 | 4.50 |
| Mostly with one parent | 151 | 8.45 | 5.28 |
| Only with one parent | 159 | 8.55 | 5.32 |
| Child gender | |||
| Girl | 6213 | 6.70 | 4.10 |
| Boy | 6632 | 7.50 | 4.39 |
| Responding parent | |||
| Female (mother) | 5315 | 6.95 | 4.26 |
| Male (father) | 1052 | 7.30 | 4.34 |
| Two parents together* | 6478 | 7.21 | 4.27 |
| Mother highest level of education | |||
| Compulsory | 203 | 8.72 | 5.56 |
| High school | 2751 | 7.67 | 4.53 |
| University less than 3 years | 1307 | 7.31 | 4.31 |
| University more than 3 years | 7284 | 6.77 | 4.04 |
| Not reported | 1300 | 7.41 | 4.45 |
*Includes some same sex parents.
SDQ, Strength and Difficulties Questionnaire.