Table 4.

Mutlivariate regression analyses based on socioeconomic stratification

		Socioeconomic position index
		High		Middle		Low
2019/2020a		N	%Delay	N	%Delay	N	%Delay
		9,948	13.7	8,416	21.4	1,552	42.5
Multivariate logistic regression		OR (95% CI)		OR (95% CI)		OR (95% CI)
	Language[other (mb)]	2.90***(2.26–3.69)		2.43***(1.81–3.23)		0.66* (0.47–0.91)
	Kindergarten[≥4 yrs]	0.70***(0.60–0.81)		0.79***(0.69–0.90)		0.75**(0.61–0.93)
		R2 Tjur		R2 Tjur		R2 Tjur
		0.026		0.021		0.030
2020/2021b		N	%Delay	N	%Delay	N	%Delay
		10,231	13.0	8,019	21.7	1,448	43.4
Multivariate logistic regression		OR (95% CI)		OR (95% CI)		OR (95% CI)
	Language[other (mb)]	2.52***(1.97–3.20)		2.27***(1.71–3.00)		1.13 (0.83–1.55)
	Kindergarten[≥4 yrs]	0.78* (0.63–0.96)		0.81* (0.68–0.98)		1.03 (0.81–1.32)
		R2 Tjur		R2 Tjur		R2 Tjur
		0.022		0.019		0.013

Analyses adjusted for age, sex and bilingual language; As the variable 'kindergarten' was operationalised differently in 2018/2019 (survey I) than in 2019/2020 and 2020/2021, survey I was not considered valid for the stratified analyses

mb migration background, N sample size, Ref reference, OR odds ratio, CI confidence interval, yrs years * p < .05, ** p < .01, *** p < .001

^a 2019/2020 considered children: n = 19,916

^b 2020/2021 considered children: n = 19,698