Table 3.

Logistic regression analyses between sleep problems at 3.5 years and probable ADHD diagnosis at 10 years

Probable ADHD diagnosis at 10 years
	Unadjusted model (Model A)			Adjusted model (Model B)
	OR	CI 95%	p	OR	CI 95%	p
Regular sleep routines, 3.5 years	.35	.20–.63	<.001	.51	.28–.93	.029
Daytime sleep duration, hr, 3.5 years	1.38	1.08–1.76	.009	1.24	.97–1.58	.088
Nighttime sleep duration, hr, 3.5 years	.73	.57–.92	.007	.70	.56–.89	.004
Night awakenings per night, 3.5 years	1.29	1.09–1.53	.003	1.27	1.06–1.52	.009
Sex	—	—	—	.29	.18–.47	<.001
Maternal age birth	—	—	—	1.01	.97–1.05	.712
FAI	—	—	—	1.12	1.08–1.16	<.001
Ethnicity	—	—	—	1.32	.43–4.06	.630
Preterm	—	—	—	.30	.18–.50	<.001
Socio‐economic group	—	—	—	1.02	.94–1.12	.584

FAI, Family adversity index; it comprises 18 items (i.e., long index) on early parenthood, housing conditions, maternal education, financial difficulties, parents' relationship, family size, family major problems, maternal psychopathology, parents' substance abuse, crime records, partner support and social network. The FAI was assessed during pregnancy (long index), at 2 years (long index), and at 4 years (short index). The short index excludes social, practical, and financial support. Points were summed at each time point for a total FAI score across the 3 time points. Maternal socioeconomic status was measured using the Cambridge Social Interaction and Stratification Scale, which provides a total score. CI, confidence interval; Ethnicity, white vs non‐white; OR, Odd ratio.