TABLE 7.

The association between school absence (divided into quartiles) and high scores on either depression, externalizing problems, or both.

	2nd quartile		3rd quartile		4th quartile
	RRR (95% CI)	p-Value	RRR (95% CI)	p-Value	RRR (95% CI)	p-Value
Depression	1.42 (1.05–1.92)	0.024	1.46 (1.08–1.98)	0.015	2.28 (1.73–2.99)	<0.001
Externalizing problems	1.47 (1.19–1.82)	<0.001	1.64 (1.32–2.03)	<0.001	2.64 (2.17–3.21)	<0.001
Both	1.09 (0.72–1.65)	0.798	1.73 (1.19–2.52)	0.004	3.08 (2.21–4.28)	<0.001
Age	1.22 (1.13–1.32)	<0.001	1.41 (1.30–1.53)	<0.001	1.72 (1.59–1.86)	<0.001
Gender	1.27 (1.12–1.44)	<0.001	1.44 (1.26–1.64)	<0.001	1.85 (1.62–2.10)	<0.001

RRR, relative risk ratio. School absence divided into quartiles, with the 1st quartile as the reference group. Here, depression refers to adolescents scoring above the 90th percentile on the SMFQ only, externalizing problems refers to adolescents scoring above the 90th percentile on the ASRS, the YCD or both, and both refers to adolescents scoring above the 90th percentile on both the SMFQ and one of the measures of externalizing problems. For gender, boy is set as reference.