Development and validation of the Japanese version of the Hyperarousal Scale

BMC Psychiatry

Table 2 Correlations coefficients of HAS-J scores with other indexes

	Insomnia patients (n = 224)			Community dwellers (n = 303)
	ISI	AIS	FIRST	ISI	AIS	FIRST
Total score	0.32^**	0.35^**	0.67^**	0.43^**	0.45^**	0.45^**
F1: Introspectiveness and Reactivity	0.22^**	0.27^**	0.67^**	0.40^**	0.40^**	0.42^**
F2: Neuroticism	0.08	0.07	0.26^**	0.00	0.07	0.16^**
F3: Insomnia	0.59^**	0.53^**	0.48^**	0.61^**	0.59^**	0.38^**
Extreme responses	0.30^**	0.32^**	0.57^**	0.17^**	0.26^**	0.19^**

Total score = total score on the HAS-J (20 items), F1 = Factor 1 (12 items), F2 = Factor 2 (5 items), F3 = Factor 3 (3 items), Extreme responses = number of responses checked as ‘Extremely’
Abbreviations: ISI Insomnia Severity Index, AIS Athens Insomnia Scale, FIRST Ford Insomnia Response to Stress Test
*p < 0.05, **p < 0.01

ISSN: 1471-244X