Internalizing symptoms in adolescence are modestly affected by symptoms of anxiety, depression, and neurodevelopmental disorders in childhood

Table 2 Unique and shared explained variance in adolescent internalizing symptoms by childhood anxiety, depression, and NDD symptoms

	Models Percentage explained variance (95% Confidence Interval)
Predictor	Anxiety symptoms	Anxiety + NDD symptoms	Anxiety + depression symptoms	Anxiety + NDD + depression symptoms
NDD factor	–	2.2 (1.6–2.9)	–	1.9 (1.3–2.5)
Depression symptoms	–	–	0.3 (0.0–0.6)	0.0 (0.0–0.0)
Anxiety symptoms	12.2 (10.3–14.2)	6.7 (5.3–8.1)	7.4 (5.8–8.9)	5.4 (4.1–6.6)
Shared^a	–	6.9 (6.1–7.7)	5.0 (3.9–6.0)	8.6 (7.4–9.8)
Total variance explained	12.2	15.8	12.7	15.9

All analyses were adjusted for sex and birth year
^a‘Shared’ refers to the part that is explained by the predictors but cannot be uniquely attributed to any of the predictors in the models

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