Distribution of mean CBCL scores at children aged 3 and 5 years and by maternal reported weekly fish intake below and above 400 g
| CBCL outcome | All | <400 g fish weekly | ≥400 g fish weekly | |||
| N* | Mean (SD) | N | Mean (SD) | N | Mean (SD) | |
| 3y Internalising | 51 238 | 9.2 (8.3) | 47 516 | 9.3 (8.3) | 3722 | 8.7 (8.2) |
| 3y Externalising | 51 238 | 12.6 (7.2) | 47 516 | 12.7 (7.2) | 3722 | 12.2 (7.2) |
| 5y Internalising | 31 624 | 6.6 (7.8) | 29 404 | 6.6 (7.8) | 2220 | 6.2 (7.1) |
| 5y Externalising | 31 737 | 8.7 (7.0) | 29 508 | 8.7 (7.1) | 2229 | 8.3 (7.1) |
Higher CBCL scores are indicating increased internalising and externalising behaviour problems.
*Participants that answered the 5-year questionnaire were included if they had also answered the 3-year questionary and the CBCL score. The number of participants that answered the CBCL externalising score at 5 years was n=31 737, while n=31 624 answered the CBCL internalising score.
CBCL, Child Behaviour Checklist.