Table 1.

Sample characteristics (sample based on children with at least one Social and Communication Disorders Checklist measurements and complete disordered eating data, N = 5,381)

	N (%)	Social and Communication Disorders Checklist
		7 years Mean (SD)	11 years Mean (SD)	14 years Mean (SD)	16 years Mean (SD)
Mean SCDC scores		2.5 (3.3)	2.1 (3.1)	2.3 (3.3)	2.6 (3.6)
Mean participants’ age (in years)		7.6 (0.12)	10.7 (0.13)	13.9 (0.15)	16.8 (0.4)
Participants’ age range (in years)		7.5–9.0	10.6–14.8	13.7–16.1	16.6–18.1
Child’s sex
Male	2,410 (44.8%)	2.9 (3.7)	2.3 (3.5)	2.4 (3.6)	2.6 (3.7)
Female	2,971 (55.2%)	2.3 (3.0)	1.8 (2.8)	2.2 (3.0)	2.7 (3.6)
Child’s ethnicity
White	4,992 (96.4%)	2.6 (3.4)	2.0 (3.1)	2.3 (3.3)	2.6 (3.6)
Ethnic minority	189 (3.6%)	2.6 (3.3)	3.4 (3.4)	2.5 (3.8)	3.2 (3.8)
Maternal Education
Compulsory	2,819 (53.7%)	2.6 (3.4)	2.1 (3.2)	2.3 (3.3)	2.7 (3.7)
Noncompulsory	2,432 (46.3%)	2.5 (3.3)	2.0 (3.1)	2.3 (3.3)	2.6 (3.5)
Maternal eating disorder
None	5,080 (96.5%)	2.6 (3.3)	2.1 (3.1)	2.3 (3.3)	2.6 (3.7)
Anorexia nervosa or Bulimia nervosa	182 (3.5%)	2.3 (2.7)	1.9 (2.9)	2.1 (3.0)	2.5 (3.2)
Maternal age
15–19	81 (1.5%)	3.5 (4.3)	2.7 (3.6)	2.4 (3.6)	3.3 (3.8)
20–25	989 (18.4%)	2.6 (3.3)	2.1 (3.2)	2.4 (3.8)	2.7 (3.6)
26–35	3,834 (71.2%)	2.5 (3.3)	2.0 (3.1)	2.3 (3.3)	2.6 (3.6)
36–44	477 (8.9%)	2.7 (3.2)	2.0 (3.2)	2.0 (2.9)	2.7 (3.7)
Maternal depressive symptoms
No	4,438 (89.7)	2.5 (3.2)	1.9 (3.0)	2.2 (3.2)	2.5 (3.5)
Yes	511 (10.3)	3.4 (3.9)	2.8 (3.6)	3.0 (3.8)	3.4 (4.3)
Maternal Pre‐pregnancy BMI
Underweight	220 (4.4%)	2.9 (3.6)	2.5 (3.4)	2.6 (3.3)	2.7 (3.4)
Normal weight	3,804 (76.7%)	2.5 (3.2)	2.0 (3.1)	2.2 (3.2)	2.7 (3.7)
Overweight	690 (13.9%)	2.6 (3.4)	2.2 (3.3)	2.4 (3.5)	2.5 (3.6)
Obese	244 (5.0%)	2.7 (3.5)	2.0 (2.7)	2.4 (3.4)	2.7 (3.3)

BMI, body mass index; SCDC, Social and Communication Disorders Checklist.