Appendix 1—table 12. Multivariable-adjusted associations^* of BMI quintiles with symptoms of depression, anxiety, and ADHD at age 8 in MoBa.

	Depressive symptoms: standardized SMFQ† score		Anxiety symptoms: standardized SCARED ‡ score		ADHD symptoms: standardized RS-DBD § score, ADHD items		ADHD-inattention symptoms: standardized RS-DBD § score, inattention items		ADHD-hyperactivity symptoms: standardized RS-DBD § score, hyperactivity items
BMI quintile	Beta ¶ (95% CI)	p	Beta ¶ (95% CI)	p	Beta ¶ (95% CI)	p	Beta ¶ (95% CI)	p	Beta ¶ (95% CI)	p
1	0.00 (-0.04,0.04)	0.99	0.04 (0.00,0.09)	0.04	0.05 (0.01,0.09)	0.01	0.05 (0.01,0.09)	0.02	0.04 (-0.00,0.08)	0.05
2	–0.01 (-0.05,0.03)	0.70	0.02 (-0.03,0.06)	0.47	0.02 (-0.02,0.06)	0.29	0.02 (-0.02,0.06)	0.38	0.02 (-0.02,0.06)	0.30
3 (ref)	1		1		1		1		1
4	0.01 (-0.03,0.05)	0.62	–0.03 (-0.07,0.01)	0.16	–0.01 (-0.04,0.03)	0.66	–0.01 (-0.05,0.02)	0.54	–0.00 (-0.04,0.03)	0.87
5	0.04 (0.00,0.08)	0.03	–0.03 (-0.07,0.01)	0.09	–0.02 (-0.06,0.02)	0.27	–0.01 (-0.05,0.03)	0.51	–0.03 (-0.06,0.01)	0.20

^*Models adjust for the child’s sex and birth year, the mother’s parity at the child’s birth, and the mother’s and father’s: educational qualifications, depressive/anxiety and ADHD symptoms, and smoking status during pregnancy. They also adjust for the child’s, mother’s, and father’s genotyping centre, genotyping chip, and first 20 principal components of ancestry.

^†Short Mood and Feelings Questionnaire.

^‡Screen for Child Anxiety Related Disorders.

^§Parent/Teacher Rating Scale for Disruptive Behaviour Disorders.

^¶Coefficients represent S.D. difference in symptoms between quintiles of child’s BMI.