Table 4.

Percentiles for the parent-reported SDQ version for 15-year-old males and females

SDQ scale	Gender	SDQ scale score
		0	1	2	3	4	5	6	7	8	9	10	11
Emotional	F	31.9	52.9	68.1	79.0	86.9	92.3	95.9	98.1	99.3	99.8	100
	M	39.0	58.2	71.0	80.1	86.8	91.7	95.1	97.5	98.9	99.7	100
Conduct	F	49.8	75.8	89.1	95.4	98.2	99.4	99.8	100	100	100	100
	M	52.3	73.3	84.9	91.7	95.6	97.9	99.1	99.7	99.9	100	100
Hyper	F	31.8	52.3	67.1	77.9	85.8	91.5	95.3	97.7	99.1	99.8	100
	M	14.5	30.7	46.3	60.3	72.2	81.8	89.2	94.4	97.6	99.4	100
Social	F	43.1	65.2	78.9	87.6	93.1	96.4	98.3	99.3	99.8	100	100
	M	28.8	52.4	69.8	82.0	90.0	94.9	97.7	99.1	99.7	100	100
Prosocial	F	100	99.8	99.2	98.0	95.6	91.4	84.5	73.8	57.8	34.4	0.0
	M	100	99.9	99.5	98.3	95.6	90.2	80.8	66.1	45.6	21.3	0.0
Externalizing	F	23.2	41.3	55.5	66.7	75.5	82.2	87.3	91.2	94.0	96.0	97.5	98.4
	M	12.1	25.7	38.8	50.7	61.1	69.9	77.3	83.2	87.9	91.6	94.3	96.3
Internalizing	F	20.0	36.6	50.3	61.5	70.6	77.9	83.7	88.2	91.6	94.2	96.1	97.5
	M	17.5	33.0	46.3	57.6	66.9	74.7	80.9	85.9	89.8	92.8	95.1	96.8
Total	F	0.1	11.5	21.7	32.0	42.1	51.4	59.6	66.4	72.1	76.8	80.7	83.9
	M	0.0	7.8	15.1	22.9	31.0	39.1	47.0	54.4	60.9	66.6	71.6	75.8

SDQ scale	Gender	SDQ scale score
		11	12	13	14	15	16	17	18	19	20	30	40
	M
Emotional	F
	M
Conduct	F
	M
Hyper	F
	M
Social	F
	M
Prosocial	F
	M	98.4	99.1	99.5	99.7	99.9	99.9	100	100	100	100
Externalizing	F	96.3	97.7	98.6	99.3	99.6	99.8	99.9	100	100	100
	M	97.5	98.5	99.1	99.5	99.8	99.9	100	100	100	100
Internalizing	F	96.8	97.9	98.8	99.3	99.6	99.8	99.9	100	100	100
	M	83.9	86.6	88.8	90.6	92.1	93.4	94.4	95.3	96.0	96.7	99.3	100
Total	F	75.8	79.4	82.4	85.1	87.3	89.2	90.8	92.1	93.3	94.3	98.8	100

SDQ Strengths and Difficulties Questionnaire, F females, M males

Norms for all other age groups per SDQ version (self-reported, parent-reported) are presented in Tables S1–S6 (Additional file 2)