BMC Psychology

Table 3 Confirmatory factor analyses results of the BPS-J

From: Development and validation of the Japanese version of the Bedtime Procrastination Scale (BPS-J)

	KMO	One-factor model			Two-factor model
	KMO	Full items	Item 2 eliminated	Items 2 & 3 eliminated	Full Items		Item 2 eliminated
Item 1	0.88	0.70	0.71	0.72	0.56	–	0.76	–
Item 2	0.81	- 0.19	–	–	–	0.23	–	–
Item 3	0.87	- 0.45	- 0.45	–	–	0.51	–	0.50
Item 4	0.85	0.77	0.77	0.78	0.83	–	0.83	–
Item 5	0.89	0.72	0.72	0.73	0.77	–	0.77	–
Item 6	0.83	0.78	0.78	0.77	–	- 0.83	–	- 0.83
Item 7	0.82	- 0.71	- 0.71	- 0.69	–	0.84	–	0.84
Item 8	0.90	0.77	0.77	0.77	0.75	–	0.75	–
Item 9	0.86	- 0.58	- 0.57	- 0.55	–	- 0.61	–	- 0.6
χ2/df		15.55	18.92	21.90	9.10		10.70
P		< 0.001	< 0.001	< 0.001	< 0.001		< 0.001
TLI		0.77	0.77	0.78	0.87		0.88
CFI		0.83	0.84	0.86	0.91		0.92
RMSEA		0.16	0.18	0.19	0.12		0.13

KMO Kaiser–Meyer–Olkin, p probability value, χ2 chi-square, df degrees of freedom, TLI Tucker–Lewis index, CFI Comparative Fit Index, RMSEA Root Mean Square of Approximation, Full items the full-item model, Item 2 eliminated the Item 2 eliminated model, Items 2 and 3 eliminated the Items 2 and 3 eliminated model

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