Table A4.

Internal consistencies (Cronbach’s alpha) of SDQ subscales in the 2018 sample.

Sex	Emotional Symptoms	a Conduct Problems	Hyperactivity/Inattention	b Peer Relationship Problems	c Total Difficulties Score
Girls	0.712	0.291	0.642	0.469	0.709
Boys	0.546	0.312	0.627	0.473	0.692
Total	0.656	0.304	0.632	0.470	0.701

Notes. ^a Alpha not acceptable, ^b not satisfactory. ^c Satisfactory alphas here are at least partly due to scale length (20 items), cp. [39].