. Author manuscript; available in PMC: 2020 Mar 24.

Published in final edited form as: Eur J Clin Invest. 2014 May;44(5):493–500. doi: 10.1111/eci.12263

Table 2.

Characteristics of the subgroups based on parent-reported insomnia symptoms and objective sleep duration

	Controls with normal sleep duration	Controls with short sleep duration	Insomnia symptoms with normal sleep duration	Insomnia symptoms with short sleep duration
n	137	110	38	42
Males (%)	50·0	48·0	34·0^*	33·0^*
Age (months)	107·3 ± 20·8	113·8 ± 18·3^**	103·5 ± 24·1	111·9 ± 21·3^**
Minority (%)	23·0	21·0	20·0	16·0
BMI (%)	56·7 ± 29·7	65·1 ± 30·1^***	63·3 ± 31·2	58·3 ± 35·2
Waist (cm)	63·3 ± 8·8	66·0 ± 10·4^***	64·7 ± 9·9	66·9 ± 13·5^†
TST (min)	493·3 ± 18·3	419·8 ± 43·9	490·4 ± 18·7	426·6 ± 33·4
AHI	0·6 ± 0·9	0·6 ± 0·8	0·5 ± 0·6	1·1 ± 1·5^‡
Anx/Dep (T)	50·8 ± 11·9	49·9 ± 11·9	58·5 ± 14·0^*	58·7 ± 15·1^*

Values are mean ± SD unless otherwise stated.

TST, total sleep time; AHI, apnea hypopnea index; Anx/Dep, anxiety and depression cluster T score.

P < 0·05 between insomnia symptoms with normal or short sleep duration and controls with normal or short sleep duration.

^**

P < 0·05 between insomnia symptoms or controls with short sleep duration and insomnia symptoms or controls with normal sleep duration.

^***

P < 0·05 between controls with normal sleep duration and controls with short sleep duration.

^†

P < 0·05 between insomnia symptoms with short sleep duration and controls with normal sleep duration.

^‡

P < 0·05 between insomnia symptoms with short sleep duration and insomnia symptoms with normal sleep duration and controls.