Impact of prenatal tobacco smoking on infant telomere length trajectory and ADHD symptoms at 18 months: a longitudinal cohort study

Table 5 The impact of maternal prenatal smoking on infant ADHD T-score and the influence of TL attrition

	Model 1: Main effects		Model 2: Adjusted model		Model 3: Adjusted model with TL attrition		Model 4: Moderation
Sample size	133		133		133		133
	β	p-value	Β	p-value	β	p-value	β	p-value
Intercept	53.735	< 0.0001	54.934	< 0.0001	55.048	< 0.0001	54.663	< 0.0001
Prenatal smoking	3.453	0.017	3.706	0.016	4.045	0.013	9.410	0.0004
TL attrition					− 0.432	0.53	0.114	0.87
Prenatal smoking x TL attrition							− 5.797	0.010
Sex			− 0.651	0.49	− 0.660	0.49	− 0.702	0.45
Race			− 0.394	0.59	− 0.472	0.52	− 0.533	0.46
SES			− 0.000	0.99	0.023	0.93	0.115	0.66

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